Hello Keyboard Tools · Image compression
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.
US-West (California, AS2914)
JPEG · Output attached · Open native file ↗
Subsequent pricing and service checks are shown separately without altering historical scores.
One run does not establish all complex scenes, untested paid maxima or long-term uptime.
Plans & historical pricing
Hello Keyboard Tools site-wide free utilities · 2026-11-06
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 record
Completely 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 ↗
Pricing recorded on the test date · 2026-11-06
100% Free (Unlimited / No watermark / No login)
Free
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 2048 × 2048 (preserving native dimensions)
- Watermark
- No watermark
- Free allowance
- Completely free, no quota limits, pure client-side single-image processing (up to 20 MB)
- Account requirements
- All features available directly without registration or login
- Maximum specification record
- 2048 × 2048 (preserving native dimensions)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Interactive single-file processing, up to 20 MB per file
- Manual refinement
- Not recorded or not verified
Tested result & sample
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.
- Fixture
- anchor_compress_v1
- Recorded environment
- US-West (California, AS2914)
- Local processing record
- 0.25 s
- End-to-end reference
- 0.25 s
Network wait includes round trips, queuing and polling error, not pure inference time. Local timings depend on the device; repetition counts are not standardized in legacy records.
Experience, rules & trust
- Disclosure
- Page transparently outlines format choices and quality controls
- Interaction
- Not recorded or not verified
- Entity record
- Not recorded or not verified
- Origin
- Not recorded or not verified
- Domain history record
- Not recorded or not verified
- Third-party tracking record
- Google Analytics · Cloudflare Web Analytics
- External information
- Not recorded or not verified
- Processing
- Pure client-side in-browser Canvas offline processing, zero uploads
- Retention statement
- Data never leaves device, destroyed immediately upon tab closure
A recorded statement does not verify deletion or all data-processing behavior.
Verifiable audit trail & evidence
Four SHA-256-verified stages link the benchmark fixture, same-run interface screenshots, native exported artifact and archived pricing sources.
anchor_compress_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
Hello Keyboard Tools homepage declaration and tool directory (snapshot ↗) · Hello Keyboard Tools privacy and processing policy (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 91.9/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_compress_v1
Honesty & reputation · 94/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 35 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 30 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 14 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 15 / 15 | Explanation unavailable | Evidence A → |
Capability · 91/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 58 / 65 | Size Reduction: -85.99% (4137.9 KB → 579.8 KB, 7.14× ratio) · PSNR: 42.34 dB · SSIM: 0.9992 | Evidence A → |
| Deliverable specifications | 18 / 20 | Watermarked or blocked free export (0/8); Export spec: 2048 × 2048 (preserving native dimensions) | Evidence A → |
| 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) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Revisions & corrections
- 2026-11-06
Initial live benchmark using Mode A compression anchor (anchor_compress_v1) evaluating guest usability and objective metrics.