RedKetchup Image Compressor · Image compression
On-device processing retains full size for free with detailed controls; ad blocking adds a 20-second export wait, avoidable by allowing ads or paying.
US-West (California, AS2914)
2048 × 2048 · PNG · 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
RedKetchup web tools and ad-free Premium account (Free / $5 One-Year / $10 Lifetime); USD · 2026-10-21
3 plan / billing-period records, all listed; — means that period is not recorded.
RedKetchup online compression and bulk tools are free with all compression settings unlocked. Clicking Upgrade / REMOVE ADS opens the Upgrade to Premium modal offering two lightweight plans: USD 5 One-Year and USD 10 Lifetime to remove ads and skip download previews/countdowns.
Cancellation, sources & verification record
Free tier requires no login; Premium offers USD 5 One-Year and USD 10 one-time Lifetime upgrades under official Terms.
RedKetchup online compressor page and Upgrade to Premium modal ↗ · 2026-10-21 Capture 1 ↗
Pricing recorded on the test date · 2026-10-19
Free; $5 upgrade removes ads and countdown timer
Free (ad/countdown supported) + $5 ad-free upgrade
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 2048 × 2048 (native resolution watermark-free PNG)
- Attached file dimensions
- 2048 × 2048 · PNG
Read directly from the attached file; this does not establish free download availability at that size.
- Watermark
- Watermark-free
- Free allowance
- Unlimited free local compression; adblock users wait a 20-second support countdown before final file export
- Account requirements
- No login required; optional $5 ad-free account login
- Maximum specification record
- 2048×2048 (native resolution watermark-free PNG direct export)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Offers a dedicated Bulk Image Resizer page; no external cloud API
- Manual refinement
- Not recorded or not verified
Tested result & sample
RedKetchup is one of the few tools that lets users manually pick 8-bit quantization dithering algorithms (Atkinson) and inspect pixels side-by-side in a full-screen viewer: it shrinks our 4.14 MB anchor PNG by 56.31% to 1.77 MB locally at PSNR=39.35 dB and SSIM=0.9984 (02_workspace.png, 03_download.png).
- Fixture
- anchor_compress_v1
- Recorded environment
- US-West (California, AS2914)
- Local processing record
- 2.2 s
- End-to-end reference
- 2.2 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
- Workspace settings and adblock countdown notice are clear and upfront
- Interaction
- Offers industry-leading granular controls for PNG bit depth (8-bit / 24-bit / 32-bit) and dithering algorithms (Atkinson / Floyd-Steinberg / Sierra) plus a split-screen inspector; the only friction is the 20s timer when ads are blocked.
- Entity record
- RedKetchup (redketchup.io)
- Origin
- Independent Developer Toolkit
- Domain history record
- 2021–Present
- Third-party tracking record
- Not recorded or not verified
- External information
- Not recorded or not verified
- Processing
- 100% client-side Web Worker + HTML5 Canvas image processing pipeline
- Retention statement
- Images are processed entirely inside local browser memory with zero server uploads or retention
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.
RedKetchup online compressor page and Upgrade to Premium modal (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 91.8/100
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 · 90/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 31.5 / 35 | Completely free and requires no sign-up (01_landing.png, 02_workspace.png); when an adblocker is active, clicking final Download displays a transparent notice ('The download will begin in 20 seconds. To avoid the countdown... Allow ads or upgrade for $5', 03_download.png) and automatically exports the full-resolution PNG once the timer finishes. | Evidence A → |
| Interaction restraint | 25.5 / 30 | Offers industry-leading granular controls for PNG bit depth (8-bit / 24-bit / 32-bit) and dithering algorithms (Atkinson / Floyd-Steinberg / Sierra) plus a split-screen inspector; the only friction is the 20s timer when ads are blocked. | Evidence A → |
| Background & reputation | 18 / 20 | Well-regarded independent frontend image processing toolkit (Image Resizer, Compressor, Icon Editor) actively maintained since 2021. | Evidence A → |
| Engineering & privacy | 15 / 15 | 100% client-side browser Web Worker and HTML5 Canvas execution—all PNG palette quantization and Atkinson dithering happen locally in browser memory (Blob URL) with zero server uploads. | Evidence A → |
Capability · 92.5/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 60.5 / 65 | Default Auto-Detect (8-bit + Atkinson dithering) preserves native PNG format and shrinks 4,137.9 KB to 1,807.8 KB (56.31% reduction, 2.29× ratio) with PSNR = 39.35 dB and SSIM = 0.9984 (60.5/65) | Evidence A → |
| Deliverable specifications | 20 / 20 | 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | Evidence A → |
| Processing speed | 12 / 15 | Local Web Worker quantization and full-screen preview complete in ~2.2s (0s network upload; adblock users wait a 20s countdown before export) (12.0/15) | 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
- 2026-10-19
Initial browser-local Web Worker compression benchmark and PSNR/SSIM verification on anchor_compress_v1.