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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 | tools.hellokeyboard.com | CompressNow | Switch / compare |
|---|---|---|---|
| Image compression | 92/100 JPEG · Output attached | 83/100 PNG · Output attached | Active task |
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Browse this task →| Criterion | Hello Keyboard Tools Image compression 92/100 Seven-aspect task score Hello Keyboard Tools is a free, login-free client-side image compressor that achieves an 85.99% volume reduction (4.14 MB to 580 KB) in only 250ms at default 80% quality, reaching 42.34 dB PSNR and 0.9992 SSIM with complete local privacy and instant turnaround; as it defaults to JPEG output, users requiring transparency for PNG inputs should select the WebP format. Tested export JPEG · Output attached Historical test · 2026-11-06 | CompressNow Image compression 83/100 Seven-aspect task score Free login-free on-device processing discloses format conversion upfront; size reduction is substantial, but PNG export is unavailable and transparency needs care. Tested export PNG · Output attached Historical test · 2026-10-18 |
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| Pricing & rules | ||
| Pricing plans | Hello Keyboard Tools site-wide free utilities · 2026-11-06 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web Free2026-11-06 ↗ Free Free Free Free use across all utilities without registration; supports up to 20 MB per file depending on the tool 1 plan / billing-period records, all listed; — means that period is not recorded. The official site declares tools are free to use, require no login, no subscription, with files primarily processed locally in the browser. Cancellation, sources & verification recordCompletely free utility suite; no subscription or cancellation required. Hello Keyboard Tools homepage declaration and tool directory ↗ · 2026-11-06 Capture 1 ↗ Hello Keyboard Tools privacy and processing policy ↗ · 2026-11-06 Capture 1 ↗ | Compressnow online in-browser image compressor · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Compressnow Free Web2026-10-21 ↗ Free Free Free Free without login; up to 30 MB per image and up to 30 images at a time; individual or ZIP download. 1 plan / billing-period records, all listed; — means that period is not recorded. The official page and FAQ state that compression runs in the browser (images are not stored), supporting up to 30 MB per image and up to 30 images at a time for JPG/JPEG/PNG/GIF/WebP (output as JPG or WebP), with no paid tiers. Cancellation, sources & verification recordCompletely free web tool with no accounts or subscription charges. Compressnow official tool page and FAQ ↗ · 2026-10-21 Capture 1 ↗ |
| Free & trial allowance on the test date | Completely free, no quota limits, pure client-side single-image processing (up to 20 MB) | 100% free, up to 30 MB per image and up to 30 images per batch |
| Cancellation & refunds | Completely free utility suite; no subscription or cancellation required. | Completely free web tool with no accounts or subscription charges. |
| Disclosure of costs & limits | Page transparently outlines format choices and quality controls | Discloses upfront at the top of the page that output format is JPG or WebP ('Transparent areas turn white') |
| Task quality | ||
| Measured fixture results | File reduction: 85.99% · Output size: 579.8 KB | File reduction: 85.99% · Output size: 579.8 KB |
| Fixture findings | Under the 2048px standard anchor, Hello Keyboard Tools exports a 2048x2048 full-resolution native JPEG at default settings, achieving 42.34 dB PSNR, 0.9992 SSIM, and 85.99% file size reduction with pure client-side Canvas offline processing in 250ms. | Local compression reduced this fixture by about 86%; export changes to JPG or WebP, not PNG. |
| Original historical observation | Hello Keyboard Tools uses client-side Canvas encoding to compress 4.14 MB down to 579.8 KB (-86.0%) at default 80% quality, achieving 42.34 dB PSNR and 0.9992 SSIM in only 250ms. | CompressNow is a fast, 100% client-side compressor: your image never leaves your browser, and in 0.9s it shrinks our 4.24 MB benchmark PNG to 579.8 KB (-85.99%, 7.14×) at 42.34 dB PSNR (02_workspace.png). Note that it only outputs JPG or WebP (disclosed upfront), so users with transparent PNGs should select the WebP toggle. |
| Suitable uses · historical assessment | Users needing fast local image compression without uploads, prioritizing privacy, and accepting JPEG/WebP formats | Users who want to rapidly shrink bulky PNG screenshots or photos locally in-browser into high-quality JPG or WebP (-86% size) without uploading files to any server |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | JPEG · Output attached · No watermark in test | PNG · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (preserving native dimensions) | 2048×2048 full-resolution free export (outputs as JPG or WebP; does not export native PNG) |
| Watermark observation | No watermark | Watermark-free |
| Batch & API | Interactive single-file processing, up to 20 MB per file | Supports up to 30 images (≤30 MB each) with one-click DOWNLOAD ZIP |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 0.25s · End-to-end reference: 0.25s | Recorded local processing time: 0.9s · End-to-end reference: 0.9s |
| Date & fixture | 2026-11-06 · 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 | All features available directly without registration or login | No registration or login required (100% local tool) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Clean single-page workspace with a live compression level slider (default 20%) and a single display ad banner, with zero popups or registration walls (02_workspace.png, 03_download.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Not verified | CompressNow |
| Recorded origin | Not verified | France / European Independent Developer |
| Domain history record | Not verified | 2012–Present (14-year online image compression tool) |
| Background & reputation assessment | Not verified | Classic multi-language online image weight reducer operating for over 10 years (currently V6.0). |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | On-device processing |
| Third-party tracking record | Google Analytics · Cloudflare Web Analytics | Not verified |
| Engineering & privacy assessment | Not verified | 100% local in-browser processing (`blob:https://compressnow.com/...`); FAQ explicitly states 'Compression runs in your browser: your images never leave your device.' |
| Retention statement | This flow runs locally; post-close deletion not independently verified | This flow runs locally; post-close deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 31 / 35 100% free for up to 30 MB per image and 30 images at a time; transparently discloses next to the Format toggle: 'Format: JPG | WebP — Works everywhere. Transparent areas turn white.' (01_landing.png). | |
| Interaction restraint | 24 / 30 Clean single-page workspace with a live compression level slider (default 20%) and a single display ad banner, with zero popups or registration walls (02_workspace.png, 03_download.png). | |
| Background & reputation | 17 / 20 Classic multi-language online image weight reducer operating for over 10 years (currently V6.0). | |
| Engineering & privacy | 15 / 15 100% local in-browser processing (`blob:https://compressnow.com/...`); FAQ explicitly states 'Compression runs in your browser: your images never leave your device.' | |
| Task quality | 58 / 65 Size Reduction: -85.99% (4137.9 KB → 579.8 KB, 7.14× ratio) · PSNR: 42.34 dB · SSIM: 0.9992 | 52.2 / 65 Shrinks file size by 85.99% (7.14×) at 42.34 dB PSNR and 0.9992 SSIM, though output format is converted to JPG or WebP (52.2/65) |
| Deliverable specifications | 18 / 20 Watermarked or blocked free export (0/8); Export spec: 2048 × 2048 (preserving native dimensions) | 15 / 20 Preserves full 2048×2048 dimensions and supports 30 MB files, but converts PNG inputs to JPG (or WebP) rather than native `.png` (15.0/20) |
| Processing speed | 15 / 15 Network-observed server wait: 0.25s (API mode: client_side; network upload 0s / end-to-end 0.25s shown for reference only, never penalized) | 14 / 15 100% local browser Canvas compression with 0 bytes uploaded in ~0.9s (14.0/15) |
