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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 | ResizePixel | Kraken.io | Switch / compare |
|---|---|---|---|
| Image compression | 85/100 2048 × 2048 · PNG | 47/100 Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · Historical description; output not attached | Active task |
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Browse this task →| Criterion | 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 | Kraken.io Web Interface Image compression 47/100 Seven-aspect task score The interface avoids ad interruptions, but free files are capped at 1MB and many features need Pro; this fixture was rejected, so compression quality was not tested. Tested export Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · Historical description; output not attached Historical test · 2026-10-18 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | 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 ↗ | Kraken.io API and Web Interface PRO plans (Free / Micro / Basic / Advanced / Premium / Enterprise); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Account2026-10-21 ↗ Free Free Free 100 MB free testing quota without credit card; Free Web Interface restricts single files to ≤1 MB. Micro Monthly2026-10-21 ↗ USD 5/month — Monthly 500 MB of images/month (USD 5 per additional GB); includes Web Interface PRO (up to 32 MB/file) and full API access. Micro Yearly2026-10-21 ↗ — USD 50/year Annual USD 50/year (2 months free); 500 MB of images/month (USD 5 per additional GB), including Web Interface PRO and API. Basic Monthly2026-10-21 ↗ USD 9/month — Monthly 2 GB of images/month (USD 4 per additional GB); includes Web Interface PRO and full API access. Basic Yearly2026-10-21 ↗ — USD 90/year Annual USD 90/year (2 months free); 2 GB of images/month (USD 4 per additional GB). Advanced Monthly2026-10-21 ↗ USD 19/month — Monthly 5 GB of images/month (USD 3 per additional GB); includes Web Interface PRO and full API access. Advanced Yearly2026-10-21 ↗ — USD 190/year Annual USD 190/year (2 months free); 5 GB of images/month (USD 3 per additional GB). Premium Monthly2026-10-21 ↗ USD 39/month — Monthly 15 GB of images/month (USD 2 per additional GB); includes Web Interface PRO and full API access. Premium Yearly2026-10-21 ↗ — USD 390/year Annual USD 390/year (2 months free); 15 GB of images/month (USD 2 per additional GB). Enterprise Monthly2026-10-21 ↗ USD 79/month — Monthly 60 GB of images/month (USD 1 per additional GB); includes Web Interface PRO and full API access. Enterprise Yearly2026-10-21 ↗ — USD 790/year Annual USD 790/year (2 months free); 60 GB of images/month (USD 1 per additional GB). 11 plan / billing-period records, all listed; — means that period is not recorded. The official pricing page lists the Free Account (100 MB testing quota; Free Web Interface capped at 1 MB/file) and five monthly/yearly tiers (yearly includes 2 months free at USD 50 / 90 / 190 / 390 / 790 per year). All paid plans include Web Interface PRO (up to 32 MB/file), API access, WordPress plugin, and Magento extension. Cancellation, sources & verification recordNo long-term contract; upgrade, downgrade, or cancel anytime under Account Settings. VAT applies to non-business EU customers. Kraken.io official monthly/yearly pricing and FAQ ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ |
| Free & trial allowance on the test date | 100% free with both Auto high-fidelity compression and exact Target KB/MB compression | Free Web Interface strictly capped at ≤1 MB per file; paid PRO unlocks 32 MB per file |
| Cancellation & refunds | Ad-supported free tool with no accounts or subscription charges. | No long-term contract; upgrade, downgrade, or cancel anytime under Account Settings. VAT applies to non-business EU customers. |
| Disclosure of costs & limits | 100% free throughout the entire workflow | Small gray footer note below dropzone ('Free Web Interface has a file size limit of 1MB') + inline error row on upload |
| Task quality | ||
| Measured fixture results | File reduction: 49.63% · Output size: 2084.2 KB | File reduction: 0% · Output size: 4137.9 KB |
| Fixture findings | Reduced this fixture by about 50% with detail retained; avoid the sidebar ad resembling a download button. | The roughly 4MB fixture exceeded the recorded 1MB free limit; free compression could not complete. |
| Original historical observation | 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). | Kraken.io's free Web Interface remains stuck in a decade-old '1 MB max file size' quota (01_landing.png): when fed our 4,137.9 KB (2048×2048) benchmark PNG, the queue immediately rejects it with 'File size too large. Upgrade to PRO and get 32MB max file size.' (02_workspace.png, 03_download.png). |
| Suitable uses · historical assessment | 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 | Only usable for tiny web icons/thumbnails already under 1 MB, or enterprise developers with a paid Kraken.io PRO API subscription |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. |
| Historical specification note · not an official maximum | 2048×2048 full-resolution PNG free direct export (supports exact target KB/MB compression) | Free tier capped strictly at 1 MB per file (rejects our 4.24 MB benchmark PNG; requires PRO for 32 MB) |
| Watermark observation | Watermark-free | Watermark-free (only for tiny ≤1 MB files) |
| Batch & API | Single-image precision workflow (no multi-file batch zip) | Supports multi-file and ZIP upload (all subject to the 1 MB/file free cap); full REST API on PRO |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 5.4s · End-to-end reference: 7.6s | Network-observed server wait: 0.2s · End-to-end reference: 0.2s |
| 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 | Account required in this test |
| Sign-in methods | No registration or login required (no account system) | No login required for ≤1 MB; lifting the 1 MB cap requires a paid Kraken.io PRO subscription |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | 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. | No fake download ads, but steps 1, 3, and 4 (URL Paster, Image Resizing, Image Conversion) are locked behind 'available in Kraken.io PRO' and any file over 1 MB fails with a PRO upgrade prompt (03_download.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | ResizePixel | Nekkra UG (Kraken.io) |
| Recorded origin | Ukraine | Germany |
| Domain history record | 2019–Present (dedicated lightweight online image editor) | 2013–Present (13-year image optimization service) |
| Background & reputation assessment | Operated by an independent Ukrainian web utility team focused on lightweight browser image tools. | Operated by Germany-based Nekkra UG (founded in 2013), well-known in legacy WordPress/Magento optimization workflows. |
| 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 | 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). | Clearly states that optimized files remain available for 12 hours before automatic deletion. |
| Retention statement | Claims deletion within 30 minutes; deletion not independently verified | Claims deletion within 12 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 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). | 21 / 35 Discloses 'Free Web Interface has a file size limit of 1MB' in small gray footer text below the dropzone (01_landing.png); however, capping a 'Free Online Image Optimizer and Compressor' at 1 MB blocks almost every real-world high-res PNG/JPG that actually needs compression, immediately prompting 'File size too large. Upgrade to PRO and get 32MB max file size.' (02_workspace.png, 03_download.png). |
| Interaction restraint | 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. | 21 / 30 No fake download ads, but steps 1, 3, and 4 (URL Paster, Image Resizing, Image Conversion) are locked behind 'available in Kraken.io PRO' and any file over 1 MB fails with a PRO upgrade prompt (03_download.png). |
| Background & reputation | 16 / 20 Operated by an independent Ukrainian web utility team focused on lightweight browser image tools. | 16 / 20 Operated by Germany-based Nekkra UG (founded in 2013), well-known in legacy WordPress/Magento optimization workflows. |
| Engineering & privacy | 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). | 10 / 15 Clearly states that optimized files remain available for 12 hours before automatic deletion. |
| Task quality | 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) | 20 / 65 Rejects our 4,137.9 KB (4.24 MB) standard 2048×2048 PNG benchmark anchor due to its strict 1 MB free file size cap (20.0/65) |
| Deliverable specifications | 19 / 20 Preserves full 2048×2048 resolution and native PNG format while supporting exact target-KB compression (19.0/20) | 7.7 / 20 Free tier is restricted to files ≤1 MB, preventing free export of standard high-resolution PNG/JPG images (7.7/20) |
| Processing speed | 10 / 15 Client-side size check rejects >1 MB files in 0.2s with a PRO upgrade notice (10.0/15) | |
