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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 | youcompress.com | birme.net | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 83/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 89/100 2048 × 2048 · PNG | 83/100 512 × 512 · PNG | Active task |
| Image upscaling | Not tested in topic | 94/100 2048 × 2048 · PNG | Compare in task topic → |
| PDF compression | 78/100 PDF · Output attached | Not tested in topic | Compare in task topic → |
| Video compression | 95/100 MP4 · Output attached | Not tested in topic | Compare in task topic → |
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Browse this task →| Criterion | YouCompress Image compression 89/100 Seven-aspect task score 100% free with no login, compressing the 4.14 MB anchor by 65.65% to 1.39 MB in 4.27s with PSNR 34.97 dB and full-res transparent PNG export. Tested export 2048 × 2048 · PNG Historical test · 2026-11-04 | BIRME Image compression 83/100 Seven-aspect task score BIRME is a free, no-login client-side image resizer and compressor that completes 88.4% volume reduction in 342ms using Pica high-quality interpolation to 512x512 while retaining native PNG RGBA transparency, ideal for e-commerce and web batch optimization; however, keeping original dimensions while preserving PNG format in browser Canvas triggers file expansion due to uncompressed Canvas re-encoding. Tested export 512 × 512 · PNG Historical test · 2026-11-01 |
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| Pricing & rules | ||
| Pricing plans | YouCompress 100% free web utility structure · 2026-10-30 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-30 ↗ Free Free Free 100% free without login, unlimited daily compressions, no watermarks Automated compression for videos, PDFs, MP3s, and PNG/JPG/GIF images 1 plan / billing-period records, all listed; — means that period is not recorded. All file compression utilities are 100% free without registration or usage quotas. Cancellation, sources & verification recordCancellation and refund terms unverified YouCompress Official Homepage ↗ · 2026-10-30 Capture 1 ↗ | BIRME 100% free client-side batch image processing and compression · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free without login; unlimited batch image processing constrained only by client memory Smart crop, format conversion (JPG/PNG/WebP/AVIF), quality compression, watermark, AI background removal and upscaling；Pure client-side execution; very large batches may consume significant browser memory；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All batch resizing, compression, AI background removal, and upscaling are 100% free with voluntary donation support and zero paid plans. Cancellation, sources & verification recordCancellation and refund terms unverified BIRME Official Studio ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Not verified | Completely free, no quota limits, pure client-side batch processing |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Not verified | Page transparently outlines all resizing and compression parameters |
| Task quality | ||
| Measured fixture results | File reduction: 65.65% · Output size: 1421.6 KB | File reduction: 88.37% · Output size: 481.4 KB |
| Fixture findings | Substantial 65.7% size reduction while fully preserving 2048px resolution and transparency without visual artifacts; fast and straightforward. | Under the 2048px standard anchor, BIRME's default preset exports a 512x512 native PNG file achieving 27.59 dB PSNR, 0.9755 SSIM, and 88.37% size reduction with pure client-side Canvas/Pica offline processing in 342ms. |
| Original historical observation | Uploading the standard 4.14 MB PNG anchor (anchor_compress_v1) to YouCompress (https://www.youcompress.com/images/) completed in 4.27s on cloud servers, displaying Completed: Download (4.04MB => 1.39MB, -65.65%), exporting a 1,421.6 KB PNG preserving 2048x2048 resolution, transparency, PSNR 34.97 dB, and SSIM 0.9956. | BIRME executes purely in local browser Canvas with Pica interpolation, reducing 4.14 MB to 481.4 KB (-88.4%) while preserving PNG format and transparency in 342ms. |
| Suitable uses · historical assessment | Not verified | E-commerce and web operations requiring fast batch resizing and compression while preserving PNG transparency |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · Check watermark record | 512 × 512 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048x2048 (Full-resolution unwatermarked PNG deliverable) | 512 × 512 (Default Pica high-quality scaling, preserving native PNG) |
| Watermark observation | Not verified | No watermark |
| Batch & API | Not verified | Supports arbitrary batch processing limited only by local device memory |
| Recorded free-tier dimensions | 2048 × 2048 | 512 × 512 |
| Attached file dimensions | 2048 × 2048 · PNG | 512 × 512 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 4.27s · End-to-end reference: 7.61s | Recorded local processing time: 0.34s · End-to-end reference: 0.34s |
| Date & fixture | 2026-11-04 · 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 | Not verified | No login in this test |
| Sign-in methods | Direct anonymous usage without login or registration | All features available directly without registration or login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | YouCompress | BIRME Project |
| Recorded origin | Not verified | United Kingdom |
| Domain history record | Not verified | Founded in 2013 |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Not verified | Continuously operating for 13 years since 2013, renowned for pure client-side privacy. |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | On-device processing |
| Third-party tracking record | Google AdSense · Google Analytics · Fathom Analytics | Google Analytics |
| Engineering & privacy assessment | Not verified | 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 | ||
| Interaction restraint | ||
| Background & reputation | ||
| Engineering & privacy | ||
| Task quality | 55 / 65 Size Reduction: -65.65% (4137.9 KB → 1421.6 KB, 2.91× ratio) · PSNR: 34.97 dB · SSIM: 0.9956 | 48 / 65 Size Reduction: -88.37% (4137.9 KB → 481.4 KB, 8.6× ratio) · PSNR: 27.59 dB · SSIM: 0.9755 |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Export spec: 2048x2048 (Full-resolution unwatermarked PNG deliverable) | 15 / 20 Clean unwatermarked export (8/8); Export spec: 512 × 512 (Default Pica high-quality scaling, preserving native PNG) |
| Processing speed | 13.5 / 15 Network-observed server wait: 4.27s (API mode: sync_json_verified; network upload 3.34s / end-to-end 7.61s shown for reference only, never penalized) | 15 / 15 Network-observed server wait: 0.34s (API mode: client_side; network upload 0s / end-to-end 0.34s shown for reference only, never penalized) |
