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Test scope & comparison notes
These are recorded facts, not a unified ranking. Tested tiers and scope are not consistently recorded. Read pricing with its date and timing with its conditions. Privacy observations reflect visible flows and statements, not a security audit.
Cross-task capability coverage across selected products
Each product is scored independently per task edge; switch tasks below while keeping shared products selected| Task edge | ShortPixel | ResizePixel | Switch / compare |
|---|---|---|---|
| Image compression | 86/100 2048 × 2048 · PNG | 85/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | ShortPixel Online Image Compressor Image compression 86/100 Seven-aspect task score Login-free access offers three compression modes without third-party ads and discloses batch and size limits; this run cut size about 68% using cloud processing. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 | ResizePixel Image Compressor Image compression 85/100 Seven-aspect task score Free login-free target-size compression preserves quality and offers deletion; extension ads on the download page can be confused with the real button. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 |
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| Pricing & rules | ||
| Pricing plans | ShortPixel free web tool, one-time non-expiring credit packs, and annual unlimited plans; USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Web / Free Plan2026-10-21 ↗ Free Free Free Web tool free without login up to 50 images/batch and ≤10 MB/file (login removes 10 MB limit); Free account includes 100 credits/month. One-time 30K2026-10-21 ↗ USD 19.99 · one-time payment Usage / one-time Usage / one-time 30,000 credits (never expire) + 100 AI credits/month + 150 GB CDN traffic across unlimited websites. Rules [1] One-time 50K2026-10-21 ↗ USD 29.99 · one-time payment Usage / one-time Usage / one-time 50,000 credits (never expire) + 100 AI credits/month + 250 GB CDN traffic across unlimited websites. Rules [1] One-time 100K2026-10-21 ↗ USD 49.99 · one-time payment Usage / one-time Usage / one-time 100,000 credits (never expire) + 100 AI credits/month + 500 GB CDN traffic across unlimited websites. Rules [1] One-time 250K2026-10-21 ↗ USD 99 · one-time payment Usage / one-time Usage / one-time 250,000 credits (never expire) + 100 AI credits/month + 1.25 TB CDN traffic across unlimited websites. Rules [1] Unlimited Yearly2026-10-21 ↗ — Annual price not verified Annual Unlimited monthly credits, unlimited websites, 100 AI credits/month, 500 GB CDN/month; card displays USD 8.33/month equivalent (2 Months Free). Card displays only the USD 8.33/month equivalent ("Saving $31.98 / year") without printing the annual invoice total. Unlimited AI Yearly2026-10-21 ↗ — Annual price not verified Annual Unlimited compression and AI credits (including AI background removal and upscaling), 500 GB CDN/month; card displays USD 13.33/month equivalent. Card displays only the USD 13.33/month equivalent ("Saving $31.98 / year") without printing the annual invoice total. 7 plan / billing-period records, all listed; — means that period is not recorded. The online web compressor is free without login for files ≤10 MB (login removes the 10 MB limit; free plan includes 100 credits/month). The pricing page lists four non-expiring one-time credit packs (30K at USD 19.99, 50K at USD 29.99, 100K at USD 49.99, and 250K at USD 99.00). The Unlimited Yearly cards display only monthly equivalents (USD 8.33/month and USD 13.33/month, "Saving $31.98 / year") without printing the annual invoice total on the card, so the annual totals are kept unverified. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordOne-time credit packs never expire; subscriptions can be cancelled anytime in the account dashboard under official Terms. ShortPixel official pricing page (annual plans and one-time credit packs) ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ | ResizePixel online image compressor and editor web tool · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits ResizePixel Free Web2026-10-21 ↗ Free Free Free Free without login for JPG/PNG/WEBP/GIF; supports auto compression and target KB/MB compression with unwatermarked export. 1 plan / billing-period records, all listed; — means that period is not recorded. The official tool page provides free, no-login online compression for JPG, PNG, WEBP, and GIF images (with auto optimization or target KB/MB compression), supported by display ads without a paywall. Cancellation, sources & verification recordAd-supported free tool with no accounts or subscription charges. ResizePixel official online image compressor page ↗ · 2026-10-21 Capture 1 ↗ |
| Free & trial allowance on the test date | Up to 50 files per batch and 10 MB per file without login; free access to Lossy, Glossy, and Lossless modes | 100% free with both Auto high-fidelity compression and exact Target KB/MB compression |
| Cancellation & refunds | One-time credit packs never expire; subscriptions can be cancelled anytime in the account dashboard under official Terms. | Ad-supported free tool with no accounts or subscription charges. |
| Disclosure of costs & limits | Discloses 'maximum 10Mb. Login to remove the restriction.' upfront below the dropzone | 100% free throughout the entire workflow |
| Task quality | ||
| Measured fixture results | File reduction: 67.54% · Output size: 1343 KB | File reduction: 49.63% · Output size: 2084.2 KB |
| Fixture findings | Offers three modes without login; the default reduced this fixture by about 68%, with quality trade-offs to inspect. | Reduced this fixture by about 50% with detail retained; avoid the sidebar ad resembling a download button. |
| Original historical observation | ShortPixel's online compressor is completely ad-free, discloses its 10 MB guest limit upfront (01_landing.png), and freely unlocks Lossy, Glossy, and Lossless modes. In default Lossy mode, it shrinks our 4,137.9 KB PNG to 1,343.0 KB (-67.54%, 3.08× ratio, 02_workspace.png) at 34.72 dB PSNR and 0.9954 SSIM. | ResizePixel delivers remarkable quality in Auto (keep the quality) mode: shrinking our 4,137.9 KB PNG by 49.63% to 2,084.2 KB in 7.6s while maintaining a near-lossless 43.94 dB PSNR and 0.9994 SSIM (02_workspace.png). Users just need to ignore the green 'DOWNLOAD EXTENSION' ad on the left and click the real 'Go to Download / Download Image' button at the bottom right (03_download.png). |
| Suitable uses · historical assessment | Webmasters and designers who want an ad-free workspace with free access to Lossy, Glossy (photographer-grade), and Lossless modes | Users who demand near-lossless visual quality (43.94 dB PSNR) or need to shrink an image to an exact KB ceiling for government/exam portals |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 full-resolution PNG free direct export (up to 10 MB and 50 files without login) | 2048×2048 full-resolution PNG free direct export (supports exact target KB/MB compression) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports up to 50 files per batch on web, plus WordPress plugins and REST API | Single-image precision workflow (no multi-file batch zip) |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 9.8s · End-to-end reference: 12.2s | Network-observed server wait: 5.4s · End-to-end reference: 7.6s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) |
| Repeated tests & reliability | No standardized repetition count, success rate or variability range is recorded. | No standardized repetition count, success rate or variability range is recorded. |
| Interaction experience | ||
| Account requirements | No login in this test | No login in this test |
| Sign-in methods | No login required (free account login removes the 10 MB per-file cap) | No registration or login required (no account system) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Clean workspace with zero third-party ad banners, offering Lossy / Glossy / Lossless mode toggles and direct one-click PNG download from the thumbnail card (02_workspace.png, 03_download.png). | Both the editor and download screen display a deceptive green 'DOWNLOAD EXTENSION — 2 Easy Steps: 1. Click Download 2. Add Trusted Spot Extension' ad banner on the left sidebar (02_workspace.png, 03_download.png), whereas the real green 'Go to Download / Download Image' button sits in the bottom-right corner. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | ShortPixel (ID Scout SRL) | ResizePixel |
| Recorded origin | Bucharest, Romania (EU GDPR compliant) | Ukraine |
| Domain history record | 2014–Present (12-year image optimization specialist) | 2019–Present (dedicated lightweight online image editor) |
| Background & reputation assessment | Operated by ShortPixel (ID Scout SRL, founded in 2014), one of the most widely installed image optimization providers in the WordPress ecosystem. | Operated by an independent Ukrainian web utility team focused on lightweight browser image tools. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | Processes images via ShortPixel's GDPR-compliant European cloud cluster without requiring personal details for guests. | Download page explicitly states 'The download will be valid for 30 minutes' and provides a red '❌ Delete Now' button for immediate manual server deletion (03_download.png). |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Claims deletion within 30 minutes; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 32 / 35 Clearly states right below the dropzone: 'Drop up to 50 files here to optimize. Compress JPG, GIF and PNG online. The files should have maximum 10Mb. Login to remove the restriction.' (01_landing.png). | 32 / 35 100% free with zero paywalls or login gates, offering both 'Auto (keep the quality)' and 'Compress file to X KB/MB' modes (01_landing.png, 02_workspace.png). |
| Interaction restraint | 26 / 30 Clean workspace with zero third-party ad banners, offering Lossy / Glossy / Lossless mode toggles and direct one-click PNG download from the thumbnail card (02_workspace.png, 03_download.png). | 17 / 30 Both the editor and download screen display a deceptive green 'DOWNLOAD EXTENSION — 2 Easy Steps: 1. Click Download 2. Add Trusted Spot Extension' ad banner on the left sidebar (02_workspace.png, 03_download.png), whereas the real green 'Go to Download / Download Image' button sits in the bottom-right corner. |
| Background & reputation | 18 / 20 Operated by ShortPixel (ID Scout SRL, founded in 2014), one of the most widely installed image optimization providers in the WordPress ecosystem. | 16 / 20 Operated by an independent Ukrainian web utility team focused on lightweight browser image tools. |
| Engineering & privacy | 14 / 15 Processes images via ShortPixel's GDPR-compliant European cloud cluster without requiring personal details for guests. | 13 / 15 Download page explicitly states 'The download will be valid for 30 minutes' and provides a red '❌ Delete Now' button for immediate manual server deletion (03_download.png). |
| Task quality | 54.3 / 65 Reduces file size by 67.54% (3.08×) with 34.72 dB PSNR and 0.9954 SSIM, balancing strong compression with clean visual fidelity (54.3/65) | 57.2 / 65 Cuts PNG file size nearly in half (-49.63%, 1.99×) while preserving an extraordinary 43.94 dB PSNR and 0.9994 SSIM (57.2/65) |
| Deliverable specifications | 19 / 20 Preserves full 2048×2048 resolution and native PNG format while offering free Lossy/Glossy/Lossless mode switching (19.0/20) | 19 / 20 Preserves full 2048×2048 resolution and native PNG format while supporting exact target-KB compression (19.0/20) |
| Processing speed | 11 / 15 Cloud SmartCompress processing takes ~9.8s (~12.2s end-to-end) (11.0/15) | |
