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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 | bulkresizephotos.com | Switch / compare |
|---|---|---|---|
| Image compression | 92/100 2048 × 2048 · PNG | 82/100 JPEG · Output attached | Active task |
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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 | Bulk Resize Photos Image compression 82/100 Seven-aspect task score Bulk Resize Photos was benchmarked on 2026-11-01: fully guest-accessible and purely client-side via Canvas/WASM, reducing a 4.14 MB image by 97.7% to 94.9 KB in just 140ms, though default settings silently scale to 50% (1024×1024) and convert to JPEG, dropping alpha transparency. Tested export JPEG · Output attached Historical test · 2026-11-01 |
|---|---|---|
| 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 ↗ | Entire client-side batch image resizing and optimization free service · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free unlimited batch image resizing, compression, and format conversion with zero uploads Batch resizing by scale, dimensions, file size, along with quality compression and format conversion；Dependent on local device performance; ad-supported；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. 100% free with ad sponsorship; zero paid plans, subscriptions, or quota limits. Cancellation, sources & verification recordCancellation and refund terms unverified Bulk Resize Photos Official Homepage ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Unlimited free local compression; adblock users wait a 20-second support countdown before final file export | Completely free, no quota limits, client-side batch processing |
| Cancellation & refunds | Free tier requires no login; Premium offers USD 5 One-Year and USD 10 one-time Lifetime upgrades under official Terms. | Not verified |
| Disclosure of costs & limits | Workspace settings and adblock countdown notice are clear and upfront | Page transparently displays all resizing and compression parameters |
| Task quality | ||
| Measured fixture results | File reduction: 56.31% · Output size: 1807.8 KB | File reduction: 97.71% · Output size: 94.9 KB |
| Fixture findings | Local processing reduced this fixture by about 56% with adjustable quantisation; useful if you want parameter control. | Sample testing confirms: under default settings it heavily compresses file size by 97.7% to 94.9 KB with PSNR of 31.14 dB and SSIM of 0.9893, though deliverable size drops to 1024x1024 without alpha channel, earning an 80.3 overall score. |
| 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). | Bulk Resize Photos uses client-side Canvas processing; default settings heavily compress the 4.14 MB image by 97.7% to 94.9 KB, converting to JPEG and scaling to 50% in 140ms. |
| 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 | Users needing ultra-fast, drastic image file size reduction where transparency retention is not required |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (native resolution watermark-free PNG direct export) | 1024×1024 (defaults to 50% scale JPEG, loses alpha transparency) |
| Watermark observation | Watermark-free | No watermark |
| Batch & API | Offers a dedicated Bulk Image Resizer page; no external cloud API | Supports unlimited batch files locally, constrained only by client memory |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 2.2s · End-to-end reference: 2.2s | Recorded local processing time: 0.14s · End-to-end reference: 0.14s |
| Date & fixture | 2026-10-19 · 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 | No login in this test | No login in this test |
| Sign-in methods | No login required; optional $5 ad-free account login | All features available directly without registration or login |
| 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. | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | RedKetchup (redketchup.io) | Wruff GK |
| 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. | Not verified |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | On-device processing |
| Third-party tracking record | Not verified | Google Analytics · Google AdSense |
| 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. | Not verified |
| 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 | 31.5 / 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. | |
| 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. | |
| 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. | |
| 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) | 50 / 65 Size Reduction: -97.71% (4137.9 KB → 94.9 KB, 43.62× ratio) · PSNR: 31.14 dB · SSIM: 0.9893 |
| Deliverable specifications | 20 / 20 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | 12 / 20 Watermarked or blocked free export (0/8); Export spec: 1024×1024 (defaults to 50% scale JPEG, loses alpha transparency) |
| 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) | 15 / 15 Network-observed server wait: 0.14s (API mode: client_side; network upload 0s / end-to-end 0.14s shown for reference only, never penalized) |
