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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 | Compressor.io | bulkresizephotos.com | Switch / compare |
|---|---|---|---|
| Image compression | 86/100 2048 × 2048 · PNG | 82/100 JPEG · Output attached | Active task |
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Browse this task →| Criterion | Compressor.io Image compression 86/100 Seven-aspect task score Free size and Pro feature limits are disclosed upfront; login-free export retains full-size PNG with good quality, alongside banner ads. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 | Bulk Resize Photos Image compression 82/100 Seven-aspect task score Bulk Resize Photos was benchmarked on 2026-11-01: fully guest-accessible and purely client-side via Canvas/WASM, reducing a 4.14 MB image by 97.7% to 94.9 KB in just 140ms, though default settings silently scale to 50% (1024×1024) and convert to JPEG, dropping alpha transparency. Tested export JPEG · Output attached Historical test · 2026-11-01 |
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| Pricing & rules | ||
| Pricing plans | Compressor.io web plans (Free / Web Compressor Pro); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-21 ↗ Free Free Free Free without login; max 10 MB per file, up to 50 compressions/day (supports JPEG/PNG/SVG/GIF/WEBP lossy and lossless modes). Web Compressor Pro2026-10-21 ↗ — USD 50/year Annual USD 50/year (1 user); max 20 MB per file, unlimited compressions, custom compression quality, image resizing, auto-rename, and no ads. Annual subscription; cancel anytime in the Account dashboard 2 plan / billing-period records, all listed; — means that period is not recorded. The official pricing page currently offers Free (max 10 MB per file, up to 50 lossy/lossless compressions per day) and Web Compressor Pro annual subscription (USD 50/year, max 20 MB per file, unlimited compressions, custom quality, image resizing, auto-rename, and no ads). Cancellation, sources & verification recordCancel anytime in the Account dashboard; official FAQ states a 7-day full refund with no questions asked (credit card refunds take 3–5 working days). Compressor.io official pricing and features comparison page ↗ · 2026-10-21 Capture 1 ↗ | Entire client-side batch image resizing and optimization free service · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free unlimited batch image resizing, compression, and format conversion with zero uploads Batch resizing by scale, dimensions, file size, along with quality compression and format conversion；Dependent on local device performance; ad-supported；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. 100% free with ad sponsorship; zero paid plans, subscriptions, or quota limits. Cancellation, sources & verification recordCancellation and refund terms unverified Bulk Resize Photos Official Homepage ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Free up to 10 MB per file with both Lossy and Lossless modes; Custom quality and image resizing require Pro | Completely free, no quota limits, client-side batch processing |
| Cancellation & refunds | Cancel anytime in the Account dashboard; official FAQ states a 7-day full refund with no questions asked (credit card refunds take 3–5 working days). | Not verified |
| Disclosure of costs & limits | Discloses 'Max 10 MB' directly above the Select files button | Page transparently displays all resizing and compression parameters |
| Task quality | ||
| Measured fixture results | File reduction: 47.38% · Output size: 2177.3 KB | File reduction: 97.71% · Output size: 94.9 KB |
| Fixture findings | Reduced this fixture by about 47% with gradients retained; the recorded free file limit was 10MB. | Sample testing confirms: under default settings it heavily compresses file size by 97.7% to 94.9 KB with PSNR of 31.14 dB and SSIM of 0.9893, though deliverable size drops to 1024x1024 without alpha channel, earning an 80.3 overall score. |
| Original historical observation | Compressor.io adopts a conservative high-fidelity strategy in default Lossy mode: compressing our 4,137.9 KB master to 2,177.3 KB (-47.38%, 02_workspace.png) while maintaining 38.39 dB PSNR and 0.9980 SSIM with smooth dark gradients and clear upfront 10 MB limit disclosure. | Bulk Resize Photos uses client-side Canvas processing; default settings heavily compress the 4.14 MB image by 97.7% to 94.9 KB, converting to JPEG and scaling to 50% in 140ms. |
| Suitable uses · historical assessment | Web designers compressing images under 10 MB who want high visual fidelity (PSNR > 38 dB) and easy switching between Lossy and Lossless modes | Users needing ultra-fast, drastic image file size reduction where transparency retention is not required |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 full-resolution PNG free direct export (up to 10 MB per file) | 1024×1024 (defaults to 50% scale JPEG, loses alpha transparency) |
| Watermark observation | Watermark-free | No watermark |
| Batch & API | Supports multi-file drag-and-drop and one-click Download All | Supports unlimited batch files locally, constrained only by client memory |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 8.4s · End-to-end reference: 10.5s | Recorded local processing time: 0.14s · End-to-end reference: 0.14s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-11-01 · 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 (email login for Pro subscribers) | All features available directly without registration or login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Displays Google AdSense banners above and below the workspace, but the orange 'Download' and 'Download All' buttons are clean and direct without registration popups (02_workspace.png, 03_download.png). | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Compressor.io | Wruff GK |
| Recorded origin | France / European Independent Tool Team | Not verified |
| Domain history record | 2013–Present (13-year established image optimizer) | Not verified |
| Background & reputation assessment | Well-known online image optimization service operating since 2013 with strong adoption among web designers and developers. | Not verified |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | On-device processing |
| Third-party tracking record | Not verified | Google Analytics · Google AdSense |
| Engineering & privacy assessment | Supports anonymous no-login compression; temporary download links are cleaned up automatically after the session. | Not verified |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | This flow runs locally; post-close deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 31 / 35 Clearly states 'compress jpg, png, gif, svg, webp. Max 10 MB.' inside the upload zone (01_landing.png); advanced custom resize and rename options are clearly badged 'PRO ONLY' upfront with zero post-upload paywall. | |
| Interaction restraint | 25 / 30 Displays Google AdSense banners above and below the workspace, but the orange 'Download' and 'Download All' buttons are clean and direct without registration popups (02_workspace.png, 03_download.png). | |
| Background & reputation | 18 / 20 Well-known online image optimization service operating since 2013 with strong adoption among web designers and developers. | |
| Engineering & privacy | 14 / 15 Supports anonymous no-login compression; temporary download links are cleaned up automatically after the session. | |
| Task quality | 55.5 / 65 Reduces file size by 47.38% (1.90×) while achieving 38.39 dB PSNR and 0.9980 SSIM with high visual fidelity (55.5/65) | 50 / 65 Size Reduction: -97.71% (4137.9 KB → 94.9 KB, 43.62× ratio) · PSNR: 31.14 dB · SSIM: 0.9893 |
| Deliverable specifications | 18.5 / 20 Preserves full 2048×2048 resolution and native PNG format with one-click no-login download (18.5/20) | 12 / 20 Watermarked or blocked free export (0/8); Export spec: 1024×1024 (defaults to 50% scale JPEG, loses alpha transparency) |
| Processing speed | 11.5 / 15 Total cloud upload and optimization time ~10.5s (~8.4s pure server processing) (11.5/15) | 15 / 15 Network-observed server wait: 0.14s (API mode: client_side; network upload 0s / end-to-end 0.14s shown for reference only, never penalized) |
