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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 | RedKetchup | PicWish | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 83/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 92/100 2048 × 2048 · PNG | 73/100 JPEG · Output attached | Active task |
| Image upscaling | Not tested in topic | 82/100 1280×1280 (2.5x free unwatermarked) / 2048×2048 (4.0x preview carries bottom notice watermark) · Historical description; output not attached | Compare in task topic → |
| Object removal | Not tested in topic | 84/100 2048 × 2048 · PNG | Compare in task topic → |
| Image generation | Not tested in topic | 85/100 JPEG · Output attached | Compare in task topic → |
| Photo restoration | Not tested in topic | 56/100 JPEG · Output attached | Compare in task topic → |
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Browse this task →| Criterion | RedKetchup Image Compressor Image compression 92/100 Seven-aspect task score 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. Tested export 2048 × 2048 · PNG Historical test · 2026-10-19 | PicWish Image Compressor Image compression 73/100 Seven-aspect task score Signed-in free accounts can download full-resolution compressed images with fast processing and substantial size reduction, but guest downloads hit a login modal and PNG inputs are converted to JPEG. Tested export JPEG · Output attached Historical test · 2026-10-19 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | RedKetchup web tools and ad-free Premium account (Free / $5 One-Year / $10 Lifetime); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Web2026-10-21 ↗ Free Free Free Free unlimited compression for PNG/JPEG/WEBP/HEIC without login; includes ads and a support countdown when ad blockers are active. Premium One-Year2026-10-21 ↗ — USD 5/year Annual USD 5 for 1 year of Premium access: removes ads (No ads) and skips download previews/countdowns (Skip previews). Premium Lifetime2026-10-21 ↗ USD 10 · one-time payment Usage / one-time Usage / one-time USD 10 one-time Lifetime Premium access: removes ads (No ads) and skips download previews/countdowns (Skip previews). 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 recordFree 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 ↗ | Web free, weekly/monthly/annual subscriptions and expanded packs; excludes API · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Pro2026-10-20 ↗ USD 5.99/week Other period Other period 50 credits/week; 50 core-feature HD downloads/day Rules [1] Pro2026-10-20 ↗ USD 9.99/month USD 59.99/year Monthly 350 credits/month; 50 core-feature HD downloads/day Rules [1] Annual 350 credits/month; 50 core-feature HD downloads/day Rules [1] Max2026-10-20 ↗ USD 26.99/month USD 263.99/year Monthly 2,000 credits/month; 15,000 HD downloads/month Rules [1] Annual 2,000 credits/month; 15,000 HD downloads/month Rules [1] 300 credits2026-10-20 ↗ USD 12.99 · one-time payment Usage / one-time Usage / one-time 300 credits; 1 per removal; not for API Rules [2] 1,000 credits2026-10-20 ↗ USD 33.99 · one-time payment Usage / one-time Usage / one-time 1,000 credits; 1 per removal; not for API Rules [2] 5,000 credits2026-10-20 ↗ USD 65.99 · one-time payment Usage / one-time Usage / one-time 5,000 credits; 1 per removal; not for API Rules [2] 11,500 credits2026-10-20 ↗ USD 99.95 · one-time payment Usage / one-time Usage / one-time 11,500 credits; 1 per removal; not for API Rules [2] 30,000 credits2026-10-20 ↗ USD 269.99 · one-time payment Usage / one-time Usage / one-time 30,000 credits; 1 per removal; not for API Rules [2] 80,000 credits2026-10-20 ↗ USD 639.99 · one-time payment Usage / one-time Usage / one-time 80,000 credits; 1 per removal; not for API Rules [2] 13 plan / billing-period records, all listed; — means that period is not recorded. Actual annual charges $59.99/$263.99. A 3-day trial is offered; cancel before expiry to avoid charges. Exact daily free count is unspecified. The 11,500-credit pack includes a current 1,500-credit bonus. Cancellation, sources & verification recordCancel under My Orders; request refunds through official support, eligibility not separately verified. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ |
| Free & trial allowance on the test date | Unlimited free local compression; adblock users wait a 20-second support countdown before final file export | Compressed canonical 4,237,170-byte PNG to 1,447,201 bytes; downloaded 2048×2048 JPEG (-65.85%) after free Google sign-in. |
| Cancellation & refunds | Free tier requires no login; Premium offers USD 5 One-Year and USD 10 one-time Lifetime upgrades under official Terms. | Cancel under My Orders; request refunds through official support, eligibility not separately verified. |
| Disclosure of costs & limits | Workspace settings and adblock countdown notice are clear and upfront | Not verified |
| Task quality | ||
| Measured fixture results | File reduction: 56.31% · Output size: 1807.8 KB | File reduction: 65.85% · Output size: 1413.3 KB |
| Fixture findings | Local processing reduced this fixture by about 56% with adjustable quantisation; useful if you want parameter control. | Retained 2000x2000 dimensions with ~91% file size reduction; the PNG input was converted to lossy JPEG. |
| Original historical observation | 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). | Compressed canonical PNG to 1,447,201-byte 2048×2048 JPEG (-65.85%, PSNR=47.03 dB, SSIM=0.9997) after free Google sign-in. |
| Suitable uses · historical assessment | Developers and UI designers who want fine-grained control over PNG color depth (8/24/32-bit) and dithering algorithms with 100% local browser privacy | Not verified |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · Check watermark record |
| Historical specification note · not an official maximum | 2048×2048 (native resolution watermark-free PNG direct export) | Not verified |
| Watermark observation | Watermark-free | Not verified |
| Batch & API | Offers a dedicated Bulk Image Resizer page; no external cloud API | Not verified |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 2.2s · End-to-end reference: 2.2s | Network-observed server wait: 1.43s · End-to-end reference: 3.54s |
| Date & fixture | 2026-10-19 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-19 · 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 | Not verified |
| Sign-in methods | No login required; optional $5 ad-free account login | Google or email login required when clicking Download Image |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | 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. | Uses a post-processing login wall at the download step and devotes half the result panel to promoting the desktop app. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | RedKetchup (redketchup.io) | AI Image Tool Matrix (Wangxu Tech / Apowersoft) |
| Recorded origin | Independent Developer Toolkit | Not verified |
| Domain history record | 2021–Present | Not verified |
| Background & reputation assessment | Well-regarded independent frontend image processing toolkit (Image Resizer, Compressor, Icon Editor) actively maintained since 2021. | Operated by Wangxu Technology (HK) Co., Limited (Apowersoft). |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | 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. | HTTPS upload to Alibaba Cloud OSS plus gw.aoscdn.com async task queue; requires account login to retrieve the compressed file. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation 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. | 15 / 35 Landing page headlines "Free Online Image Compressor — Compress images with one click" and lets guests upload and preview the compression ratio (4.04MB to 1.38MB), but clicking Download Image opens a login gate; after free Google sign-in, the 2048×2048 image downloads without payment, while batch mode and custom settings require the desktop app. |
| 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. | 12 / 30 Uses a post-processing login wall at the download step and devotes half the result panel to promoting the desktop app. |
| Background & reputation | 18 / 20 Well-regarded independent frontend image processing toolkit (Image Resizer, Compressor, Icon Editor) actively maintained since 2021. | |
| 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. | 10 / 15 HTTPS upload to Alibaba Cloud OSS plus gw.aoscdn.com async task queue; requires account login to retrieve the compressed file. |
| 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) | 53 / 65 Compressed the 4,237,170-byte (4,137.9 KB) canonical PNG to a 1,447,201-byte (1,413.3 KB) 2048×2048 JPEG (-65.85%, 2.93x ratio) with PSNR=47.03 dB and SSIM=0.9997 on opaque RGB content, though converting the container format from PNG to JPEG. |
| Deliverable specifications | 20 / 20 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | 14 / 20 Signed-in free account downloads a full 2048×2048 watermark-free file, but guest download is blocked by a login modal and PNG is transcoded to JPEG. |
| 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) | 14.5 / 15 2026-10-21 single-sample network timing: OSS PUT upload 1.80s, async compression task (r40 to r43) server wait 1.43s, end-to-end 3.54s. |
