Use three classic features: pick a resample method in Image Size, reduce noise with the manual Camera Raw sliders, then sharpen with Unsharp Mask at 100% zoom. That is the whole non-AI path. Adobe documents every setting below, with the exact ranges. No Super Resolution, no Neural Filters, no Generative Fill — and no invented pixels.
How do you enhance image quality in Photoshop without AI?
You work in three passes: resize with a classic resample method, clean noise with manual sliders, sharpen last at 100% zoom. The order matters more than the settings.
- Resize correctly. Adobe's help documentation lists six resampling algorithms. For enlarging, it recommends Preserve Details 2.0, which "maintains sharp edges and fine detail with reduced artifacts and includes a Reduce Noise slider" (Adobe, updated 27 Oct 2025).
- Clean noise manually. Camera Raw's Detail tab ships Luminance and Color noise sliders. Adobe calls this section "controls for reducing image noise" (Adobe, 28 Jul 2026). The AI "Denoise" feature sits elsewhere, in the Enhance dialog.
- Sharpen last, at 100%. Unsharp Mask gives you Amount 1–500%, Radius 0.1–250 px, and Threshold 0–255 (Adobe, updated 27 Oct 2025). Judge the result at actual pixels, never zoomed out.
- Expect limits, not miracles. Adobe states plainly: "A blurred image in-camera will always be blurry — no amount of sharpening will change that" (Adobe, accessed November 2026).
Which Photoshop features count as AI?
AI features are the ones Adobe itself labels AI: Super Resolution, Denoise, and the Generative tools. Everything in the sharpening and resampling menus is classic math.
| Feature | Adobe's own classification | Use it in a non-AI workflow? |
|---|---|---|
| Super Resolution (Camera Raw → Enhance) | Adobe: Photoshop and Lightroom "use AI and ML to choose the best-looking pixels" (12 Jan 2026) | No — this is the AI pass |
| Denoise (Camera Raw → Enhance) | Adobe Blog: "an AI-powered feature called Denoise" (18 Apr 2023) | No — use the manual sliders instead |
| Generative Fill / Generative Expand | Adobe's plans page lists "Standard AI features like Generative Fill" (accessed Nov 2026) | No |
| Preserve Details 2.0 (Image Size) | Listed by Adobe under "Resampling algorithms", not under AI features (updated 27 Oct 2025) | Yes — it is a resampling method |
| Unsharp Mask, Smart Sharpen, High Pass | Documented as classic filters with numeric ranges (Adobe help, 2025–2026) | Yes |
| Manual noise sliders (Luminance, Color) | Adobe calls the set "Manual Noise Reduction" (18 Apr 2023) | Yes |
The distinction matters for output rules. Some clients, archives, and stock workflows reject AI-generated pixels. This guide stays entirely on the classic side of that line.
What is the non-AI workflow, step by step?
Six steps, in order: protect the original, pick the resample method, resize once, denoise manually, sharpen at 100% zoom, then verify the export. Budget about 20–25 minutes for a careful pass on one photo.
- Protect the original. Adobe's sharpening instructions begin: "To preserve the original image, work on a duplicate layer" (Adobe, updated 27 Oct 2025). For repeated edits, convert the layer to a Smart Object so filters stay re-editable.
- Open Image > Image Size. Turn Resample on. Choose the method from the table in the next section. Enter the final pixel width, not a percentage guess.
- Resize once — or in small passes. Adobe warns that "resampling can degrade image quality" and that upsampling "loses some detail and sharpness" (Adobe, 12 Jun 2026). If the jump is bigger than 2×, split it into several smaller passes. MakeUseOf documented the conservative version of this: resample in 10 percent steps (30 Aug 2019).
- Reduce noise before sharpening. Open the Camera Raw Detail tab. Use Luminance and Color sliders. Adobe tells you to "first zoom in on the preview image to at least 100%" (Adobe, 28 Jul 2026).
- Sharpen last, at 100% zoom. Filter > Sharpen > Unsharp Mask. Start at Amount 80–120%, Radius 0.8–1.5 px, Threshold 2–10. Raise Amount until edges pop, then stop before halos appear.
- Export and verify. Save at the target pixel dimensions. Then divide pixel width by print width in inches. That result is your effective PPI — check it in the DPI checker.
Which resample method should you pick in Image Size?
Pick by job: Preserve Details 2.0 for photos you enlarge, Bicubic Sharper when you reduce, Nearest Neighbor for pixel art and screenshots. Adobe publishes this table in its help documentation.
| Method | Best for | What Adobe says it does |
|---|---|---|
| Automatic | General use | Chooses the best method automatically, depending on whether the image is enlarged or reduced |
| Preserve Details 2.0 | Enlarging images | Maintains sharp edges and fine detail with reduced artifacts; includes a Reduce Noise slider |
| Bicubic Smoother | Enlarging images | Creates smooth transitions with minimal jagged edges |
| Bicubic Sharper | Reducing image size | Helps maintain sharpness when reducing size |
| Bicubic | General use | Balances file size and image quality; suits tonal transitions |
| Nearest Neighbor | Pixel art, sharp-edged graphics | Produces a crisp, blocky look that preserves hard edges |
- Photo you must enlarge: Preserve Details 2.0. Use its Reduce Noise slider if the enlargement amplifies grain.
- Photo going smaller: Bicubic Sharper. Adobe notes it can oversharpen some areas; if it does, fall back to plain Bicubic.
- Logo, screenshot, pixel art: Nearest Neighbor. It copies pixels instead of blending them, so hard edges stay hard.
- Text-heavy or line art: Bicubic Smoother or Nearest Neighbor. Test both at 100% zoom and keep the sharper one.
One rule beats all six choices: never resample when you do not need new pixels. To change only the printed size, turn Resample off. Photoshop then redistributes the pixels you already own. Our DPI converter does the same job in the browser, free.
How do you reduce noise without AI Denoise?
Use the manual noise reduction sliders in Camera Raw's Detail tab: Luminance, Luminance Detail, Luminance Contrast, Color, and Color Detail. They still ship in current Photoshop, tucked into what Adobe calls the Manual Noise Reduction panel.
- Luminance reduces grain (grayscale noise). Raise it until grain drops, then stop before skin and skies turn plastic.
- Luminance Detail sets the threshold. Higher preserves more detail but can leave noise behind; lower cleans more but softens texture (Adobe, 28 Jul 2026).
- Color removes colored speckles. Color Detail protects thin color edges against bleeding (Adobe, 28 Jul 2026).
- Sharpening Masking works with these: hold Alt/Option while dragging to see the edge mask. At 100, "sharpening is restricted to areas near the most robust edges" (Adobe, 28 Jul 2026).
Where the AI version went: Adobe's own team blog explains that Denoise is "an AI-powered feature," and that "the previous Noise Reduction sliders, like Luminance and Color" were "tucked away in a new sub-panel called Manual Noise Reduction" (Adobe Blog, 18 Apr 2023). Same sliders, new drawer.
Order matters: reduce noise first, sharpen second. Sharpening amplifies grain, so denoise early and sharpen only what remains. For grainy files, the non-AI path is slower than one-click Denoise — but it stays fully yours to adjust.
Is Photoshop without AI worth the money?
Yes, if you already pay for Photoshop and need AI-free outputs. No, if you only resize files occasionally — free tools cover that.
- Cost: Photoshop alone is US$22.99/month on the annual, billed monthly plan, or US$263.88 prepaid per year (Adobe plans page, accessed November 2026).
- Cheaper route: the Photography plan includes Photoshop at US$19.99/month, annual billed monthly (Adobe, accessed November 2026). It costs less than the single-app plan and adds Lightroom plus 1TB storage.
- Trial: Adobe lists a 7-day free trial. You cannot buy Photoshop outright — Adobe answers "No" to that question on its plans page (accessed November 2026).
- AI features are metered separately: the US$22.99 plan includes 25 generative credits per month. Those credits power generative AI features; the classic tools in this guide use none of them (Adobe plans page, accessed November 2026).
The honest verdict: you pay for layers, masks, color management, Camera Raw, and print workflows — not for AI. If your work is one resize and one sharpen per week, a free editor does it. If you retouch, composite, and deliver layered files, the subscription still earns its keep, AI or not.
What can non-AI enhancement not do?
It cannot invent detail that was never captured. Non-AI methods redistribute, smooth, and increase edge contrast — nothing more. Adobe says this itself, twice.
- On upsampling: "When you upsample... new pixels are added based on the color values of existing pixels, and the image loses some detail and sharpness" (Adobe Photoshop Elements documentation, 12 Jun 2026).
- On resampling generally: "Resampling of any kind, especially upsampling, can result in poorer image quality" (Adobe, 12 Jan 2026).
- On sharpening: "While Photoshop can't improve your image quality, it can add clarity and improve contrast in specific areas of an image to make it clearer" (Adobe, accessed November 2026).
- From practitioners: "Pixels that have not been recorded cant appear out of nowhere" — top-voted direction in r/AskPhotography's thread on increasing resolution without generative AI (accessed November 2026).
- On Preserve Details 2.0 specifically: it "cannot create them from nothing. It can only sharpen some details that already exist" — community answer in r/photoshop's Preserve Details 2.0 thread (accessed November 2026).
What non-AI methods do well: clean, predictable enlargement; controlled sharpening; reversible edits; and files that contain no generated pixels. That is enough for print sizing, web exports, and any workflow that audits its pixels.
Who is this workflow not for?
Skip it if you need real added detail, batch automation on a budget, or a one-click fix for a badly blurred shot.
- Anyone chasing detail that is not in the file. A heavy crop or an old low-resolution scan will not gain texture from interpolation. You need a better original, a re-shoot, or an AI tool — and the last one is outside this guide.
- Anyone who only resizes files. If your whole job is changing pixel dimensions, Photoshop is overkill. Use a free editor (below) or our image resizer.
- Anyone printing bigger than the math allows. Check the pixel division first: pixel width ÷ print width in inches = effective PPI. Our minimum resolution guide lists the pixel sizes per print.
- Anyone on a one-month deadline with no time to learn sliders. The manual path rewards practice. If you have one shot and one hour, consider whether a free trial of the AI workflow in our super-high-quality Photoshop guide fits your constraints — then decide.
What are the free non-AI alternatives to Photoshop?
GIMP and Photopea both run the same classic operations for free: resample, denoise, sharpen. Neither charges a subscription.
| Tool | Price | Non-AI resize + sharpen | Best for |
|---|---|---|---|
| Adobe Photoshop | US$22.99/mo annual billed monthly; Photography plan US$19.99/mo (Adobe, accessed Nov 2026) | Yes — full documented ranges | Layered retouch, color-managed print work, Camera Raw |
| GIMP | Free and open source (gimp.org, accessed Nov 2026) | Yes — classic interpolation and unsharp mask | Desktop editing without a subscription |
| Photopea | Free online editor; runs locally in your browser (photopea.com, accessed Nov 2026) | Yes — layers, masks, PSD support | Quick edits, no install, PSD files |
| DPI Converter Online tools | Free (this site) | Resize only — no sharpening | Exact dimensions and DPI checks in seconds |
The workflow transfers: same order, same logic — resize with the right interpolation, reduce noise, sharpen last at 100%. Only the menu names change. Note that Photopea also ships optional AI tools; for a strictly non-AI pass, simply do not touch them.
First-hand: what we checked ourselves
We build resolution tools, so we verified every number that depends on arithmetic — and left the Photoshop screen tests marked for capture. Here is exactly what is confirmed and what still needs a dated screenshot.
- Check 1 — the pixel division. A 4,032-pixel photo placed 8 inches wide delivers 4,032 ÷ 8 = 504 PPI. Run it in the DPI checker: the stored DPI tag never enters the result. This is arithmetic, reproducible in one click.
- Check 2 — relabeling adds nothing. Push the same file through the DPI converter set to 300. Pixel dimensions come out identical: 4,032 × 3,024. Only the label changed. That is the same principle as resampling with Resample off in Photoshop.
- Check 3 — plan the jump before you resize. Enter your own numbers in the Non-AI Upscale Planner below. It reports the scale factor, the recommended Adobe resample method, and the effective PPI at your print size.
What broke when we pushed settings too far: documented failure modes, not guesses. Over-sharpening creates halos — Adobe's own guide shows "the halo effect created by over-sharpening" (accessed November 2026). Excessive Luminance smoothing erases texture, which Adobe states as the trade-off in its slider descriptions (28 Jul 2026).
Who it is not for: this section covers arithmetic you can verify free, in your browser. It is not a lab certification, and it is not a substitute for inspecting your own file at 100% zoom.
[AUTHOR EXPERIENCE / NEEDS SOURCE before publish: three dated screenshots — (1) Image Size with Preserve Details 2.0 selected at a 2× jump, (2) Unsharp Mask at Amount 110% / Radius 1.0 px shown at 100% zoom with and without the filter, (3) Camera Raw Detail tab with the manual noise sliders visible. Add the Photoshop version and the test image's pixel dimensions to each caption.]
Free tool: Non-AI Upscale Planner
Non-AI Upscale Planner
Watch: the non-AI Photoshop workflow
Video embed placeholder — replace VIDEO_ID with the published YouTube ID before launch.
FAQ
Can Photoshop enhance image quality without using AI?
Yes. Three classic feature groups do the work: resampling methods in Image Size (Preserve Details 2.0, Bicubic Smoother, Bicubic Sharper), the manual noise sliders in Camera Raw's Detail tab, and sharpening filters (Unsharp Mask, Smart Sharpen, High Pass). Adobe documents numeric ranges for all of them, and none of them generates pixels with AI.
Is Preserve Details 2.0 an AI feature?
No. Adobe's help documentation lists Preserve Details 2.0 under "Resampling algorithms" — the same table as Bicubic and Nearest Neighbor — not under its AI and generative features (Adobe, updated 27 Oct 2025). It is an edge-aware upscaling algorithm with a Reduce Noise slider. Adobe describes the AI path separately: Super Resolution, where Photoshop "use[s] AI and ML to choose the best-looking pixels" (12 Jan 2026).
What is the best resample setting for enlarging a photo without AI?
Preserve Details 2.0. Adobe's table marks it "Best for: Enlarging images" and says it "maintains sharp edges and fine detail with reduced artifacts" (updated 27 Oct 2025). Bicubic Smoother is the classic fallback. If the enlargement is bigger than 2×, split it into smaller passes — MakeUseOf documented 10 percent steps as the conservative approach (30 Aug 2019).
Does sharpening add detail to a blurry photo?
No. Sharpening increases contrast along edges; it does not recover missing detail. Adobe puts it this way: "A blurred image in-camera will always be blurry — no amount of sharpening will change that" (accessed November 2026). Fix blur at capture, or accept softer output at a smaller size.
How much does Photoshop cost if I never use AI features?
The same as everyone else: US$22.99/month annual billed monthly, or US$263.88/year prepaid, per Adobe's plans page (accessed November 2026). The Photography plan includes Photoshop at US$19.99/month. AI features are metered with generative credits; the classic tools in this guide consume none of them.
What is the free alternative to Photoshop for non-AI editing?
GIMP — free and open source, per gimp.org (accessed November 2026) — or Photopea, a free browser editor with full PSD support, per photopea.com (accessed November 2026). Both handle resampling, noise reduction, and unsharp masking. If you only need to change dimensions or check DPI, use this site's image resizer and DPI checker instead.
Can I avoid AI completely inside modern Photoshop?
Yes. Avoid the Enhance dialog (Super Resolution, Denoise), the Generative tools, and Neural Filters. Everything else — Image Size resampling, Unsharp Mask, Smart Sharpen, High Pass, manual noise sliders, Despeckle, Dust & Scratches, Median — predates generative AI and remains fully documented in Adobe's help pages (filter reference, 4 Oct 2026).
Next steps: a one-week plan
- Day 1 (2 minutes): pick the photo that matters. Write down its pixel width and final print or display size.
- Day 2 (1 minute): run both numbers through the Non-AI Upscale Planner. Note the recommended resample method and the scale factor.
- Day 3 (10 minutes): in Photoshop, duplicate the layer, open Image Size, and apply the method once. If the jump exceeds 2×, repeat in smaller passes.
- Day 4 (5 minutes): open Camera Raw's Detail tab, zoom to 100%, and dial Luminance and Color until grain drops without smearing texture.
- Day 5 (5 minutes): apply Unsharp Mask at Amount 80–120%, Radius 0.8–1.5 px, Threshold 2–10. Stop before halos appear.
- Day 6 (2 minutes): export at target dimensions, then check effective PPI in the DPI checker. Pixels ÷ inches must clear your target.
- Day 7: compare your non-AI export against the original at 100% zoom. Decide whether the subscription earns its keep for your work — Adobe's 7-day trial covers a second look.
Sources
- Adobe. "Resampling options in Photoshop." Quotes: Preserve Details 2.0 "maintains sharp edges and fine detail with reduced artifacts and includes a Reduce Noise slider"; Bicubic Sharper "helps maintain sharpness when reducing size." helpx.adobe.com. Updated 27 Oct 2025; accessed Nov 2026.
- Adobe. "Sharpen images with unsharp mask in Photoshop." Quotes: Amount "1 to 500%"; Radius "0.1 and 250 pixels"; Threshold "0 and 255"; "To preserve the original image, work on a duplicate layer." helpx.adobe.com. Updated 27 Oct 2025; accessed Nov 2026.
- Adobe. "Sharpen images with Smart Sharpen in Photoshop." Quotes: "Zoom in to 100% to accurately see the sharpening effect"; Remove options Gaussian Blur, Lens Blur, Motion Blur. helpx.adobe.com. Updated 27 Oct 2025; accessed Nov 2026.
- Adobe. "Sharpen images using edge masks in Photoshop." High Pass radius 1–3 px, blend mode Overlay, Gaussian Blur 0.5–1.0 px on the mask. helpx.adobe.com. Last updated 23 Feb 2026; accessed Nov 2026.
- Adobe. "Using the High Pass Filter in Photoshop." Quotes: radius "between 1 and 7"; Overlay "creates a high-contrast effect," Soft Light "a more subtle contrast." adobe.com. 12 Jan 2026.
- Adobe. "Using unsharp masking for sharper photos." Quotes: "A blurred image in-camera will always be blurry — no amount of sharpening will change that"; "While Photoshop can't improve your image quality, it can add clarity and improve contrast in specific areas." adobe.com. Accessed Nov 2026.
- Adobe. "How to increase resolution of an image." Quotes: "Resampling of any kind, especially upsampling, can result in poorer image quality"; Super Resolution uses "AI and ML to choose the best-looking pixels"; "When you're done resampling, applying the Unsharp Mask filter can help enhance image quality." adobe.com. 12 Jan 2026.
- Adobe. "Resize images in Adobe Photoshop Elements." Quotes: "resampling can degrade image quality"; upsampling adds pixels "based on the color values of existing pixels, and the image loses some detail and sharpness." helpx.adobe.com. 12 Jun 2026.
- Adobe. "Sharpening and noise reduction in Adobe Camera Raw." Detail tab: Amount, Radius, Detail, Masking ("sharpening is restricted to areas near the most robust edges" at 100). Noise Reduction: Luminance, Luminance Detail, Luminance Contrast, Color, Color Detail. helpx.adobe.com. 28 Jul 2026.
- Adobe Blog, Eric Chan. "Denoise Demystified." Quotes: "an AI-powered feature called Denoise"; previous sliders "tucked away in a new sub-panel called Manual Noise Reduction." blog.adobe.com. 18 Apr 2023.
- Adobe. "Photoshop filter effects reference." High Pass "retains edge detail in specified radius where sharp color transitions occur, suppressing the rest"; noise filters Despeckle, Dust & Scratches, Median. helpx.adobe.com. 4 Oct 2026.
- Adobe. "Adobe Photoshop pricing & membership plans." US$22.99/mo annual billed monthly; US$263.88/yr prepaid; Photography plan US$19.99/mo; 7-day free trial; "Can I buy Photoshop outright? No." adobe.com. Accessed Nov 2026.
- GIMP. "The Free & Open Source Image Editor." GIMP 3.2.8 released 2 Nov 2026. gimp.org. Accessed Nov 2026.
- Photopea. "Free Online Photo Editor" with full PSD support; runs locally in the browser. photopea.com. Accessed Nov 2026.
- MakeUseOf. "How to Digitally Enlarge a Picture Without Losing Quality." Recommends resampling in 10 percent increments. 30 Aug 2019. makeuseof.com.
- HowToGeek. "How to Improve (Almost) Any Digital Photo, Without Auto-Enhance." Manual contrast, crop, and cleanup workflow without auto modes. 12 Feb 2017. howtogeek.com.
- Reddit r/photoshop. "Tips/Tricks for retaining sharpness when upscaling a small image?" — asks specifically for "(non-AI) Photoshop tricks." reddit.com. Accessed Nov 2026.
- Reddit r/AskPhotography. "does anyone here know how to increase the resolution of a photo without gen ai?" Quote: "Pixels that have not been recorded cant appear out of nowhere." reddit.com. Posted ~2025; accessed Nov 2026.
- Reddit r/photoshop. "Preserve details 2.0." Quote: "Preserve Details 2.0 cannot create them from nothing. It can only sharpen some details that already exist." reddit.com. Posted ~2020; accessed Nov 2026.
- Arithmetic on this page: effective PPI = pixel width ÷ print width in inches; 4,032 ÷ 8 = 504 PPI; 4,032 ÷ 300 = 13.44 in. All computed, not estimated.
- [NEEDS SOURCE before publish] Dated first-hand screenshots: Image Size with Preserve Details 2.0, Unsharp Mask at 100% zoom before/after, Camera Raw Detail tab manual sliders.
Fact-check table
| Claim | Source | Date |
|---|---|---|
| Preserve Details 2.0 is best for enlarging; includes a Reduce Noise slider | Adobe, Resampling options in Photoshop | Updated 27 Oct 2025; accessed Nov 2026 |
| Bicubic Sharper is best for reduction; Bicubic Smoother for enlargement; Nearest Neighbor for hard edges | Adobe, Resampling options in Photoshop | Updated 27 Oct 2025 |
| Unsharp Mask: Amount 1–500%, Radius 0.1–250 px, Threshold 0–255 | Adobe, Sharpen images with unsharp mask | Updated 27 Oct 2025 |
| Work on a duplicate layer to preserve the original when sharpening | Adobe, Sharpen images with unsharp mask | Updated 27 Oct 2025 |
| Smart Sharpen Remove options: Gaussian Blur, Lens Blur, Motion Blur; zoom to 100% to judge | Adobe, Sharpen with Smart Sharpen | Updated 27 Oct 2025 |
| High Pass edge-mask recipe: radius 1–3 px, Overlay blend, 0.5–1.0 px Gaussian Blur on mask | Adobe, Sharpen images using edge masks | 23 Feb 2026 |
| High Pass radius 1–7; Overlay high contrast, Soft Light subtle | Adobe, Using the High Pass Filter | 12 Jan 2026 |
| "No amount of sharpening will change" a blurry in-camera capture | Adobe, Using unsharp masking for sharper photos | Accessed Nov 2026 |
| Photoshop "can't improve your image quality" but can add clarity and contrast | Adobe, Using unsharp masking for sharper photos | Accessed Nov 2026 |
| "Resampling of any kind, especially upsampling, can result in poorer image quality" | Adobe, How to increase resolution of an image | 12 Jan 2026 |
| Super Resolution uses "AI and ML to choose the best-looking pixels" | Adobe, How to increase resolution of an image | 12 Jan 2026 |
| After resampling, Unsharp Mask "can help enhance image quality" | Adobe, How to increase resolution of an image | 12 Jan 2026 |
| Upsampling adds pixels from existing color values; "the image loses some detail and sharpness"; "resampling can degrade image quality" | Adobe, Resize images in Photoshop Elements | 12 Jun 2026 |
| Camera Raw Detail tab controls: Amount, Radius, Detail, Masking; zoom to at least 100% | Adobe, Sharpening and noise reduction in Camera Raw | 28 Jul 2026 |
| Manual noise sliders: Luminance, Luminance Detail, Luminance Contrast, Color, Color Detail | Adobe, Sharpening and noise reduction in Camera Raw | 28 Jul 2026 |
| Denoise is "an AI-powered feature"; old sliders moved to "Manual Noise Reduction" | Adobe Blog, Denoise Demystified | 18 Apr 2023 |
| High Pass "retains edge detail in specified radius"; Despeckle, Dust & Scratches, Median are classic noise filters | Adobe, Photoshop filter effects reference | 4 Oct 2026 |
| Photoshop US$22.99/mo annual billed monthly; US$263.88/yr prepaid; Photography US$19.99/mo; 7-day trial; no outright purchase | Adobe, Photoshop pricing & membership plans | Accessed Nov 2026 |
| US$22.99 plan includes 25 monthly generative credits for AI features | Adobe, Photoshop pricing & membership plans | Accessed Nov 2026 |
| GIMP is free and open source; version 3.2.8 current | gimp.org | 2 Nov 2026 release; accessed Nov 2026 |
| Photopea is a free online editor with full PSD support, running locally | photopea.com | Accessed Nov 2026 |
| Resample in 10 percent increments as a conservative enlargement method | MakeUseOf | 30 Aug 2019 |
| Practitioners state pixels not recorded cannot appear from nowhere | Reddit r/AskPhotography thread | ~2025; accessed Nov 2026 |
| Preserve Details 2.0 "cannot create them from nothing" | Reddit r/photoshop thread | ~2020; accessed Nov 2026 |
| 4,032 ÷ 8 = 504 PPI; 4,032 ÷ 300 = 13.44 in; effective PPI = pixels ÷ inches | Arithmetic on this page | Computed Nov 2026 |
| Over-sharpening creates halos (documented failure mode) | Adobe, Using unsharp masking for sharper photos | Accessed Nov 2026 |
| [NEEDS SOURCE] First-hand Photoshop screenshots at 100% zoom | Author test — capture before publish | Pending |