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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 | Squoosh | quickimagekit.com | Switch / compare |
|---|---|---|---|
| Image compression | 97/100 JPEG · Output attached | 92/100 WEBP · Output attached | Active task |
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Browse this task →| Criterion | Squoosh (Google Chrome Labs) Image compression 97/100 Seven-aspect task score Free, open-source, login-free and ad-free on-device processing suits privacy and fine control; results depend on the chosen codec and settings. Tested export JPEG · Output attached Historical test · 2026-10-18 | QuickImageKit Image Compressor Image compression 92/100 Seven-aspect task score 100% free and local in-browser compression with zero cloud upload, shrinking our 4.14 MB anchor by 93.33% to 276 KB (37.75 dB PSNR) in 0.54s, though PNG inputs are converted to WebP as disclosed. Tested export WEBP · Output attached Historical test · 2026-10-26 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | Squoosh in-browser local image compressor; open-source free · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Squoosh Web (Open-source free)2026-10-21 ↗ Free Free Free Completely free without login; local browser processing with no usage-count or file-size hard caps and full-resolution unwatermarked export. 1 plan / billing-period records, all listed; — means that period is not recorded. The official page states that all work runs locally in the browser so images never leave the device; it is an Apache-2.0 open-source tool with no paid tiers or in-app purchases. Cancellation, sources & verification recordCompletely free open-source tool with no accounts or subscription charges. Squoosh official page and open-source notice ↗ · 2026-10-21 Capture 1 ↗ | Quick Image Kit in-browser local image utilities; completely free · 2026-10-26 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free local web tool2026-10-26 ↗ Free Free Free Completely free without login; 100% local in-browser processing with quality slider and 50KB/100KB/200KB/500KB target-size presets, watermark-free export. PNG inputs are converted to WebP upon export (disclosed upfront as Format: PNG → WebP) 1 plan / billing-period records, all listed; — means that period is not recorded. The official page states that images are decoded and rendered locally in the browser without server uploads, with no paid subscriptions or credit packs; PNG inputs are exported as WebP. Cancellation, sources & verification recordCompletely free local utility with no accounts or paid subscriptions. Quick Image Kit official image compressor and privacy notice page ↗ · 2026-10-26 Capture 1 ↗ · Capture 2 ↗ |
| Free & trial allowance on the test date | Unlimited free forever with no daily count or file size caps | Unlimited free usage with multi-image drag-and-drop and ZIP batch download |
| Cancellation & refunds | Completely free open-source tool with no accounts or subscription charges. | Completely free local utility with no accounts or paid subscriptions. |
| Disclosure of costs & limits | Original size, compressed size, and reduction percentage are displayed in real time on drop | Upfront disclosure on both landing page and workspace that PNG inputs convert to WebP |
| Task quality | ||
| Measured fixture results | File reduction: 93.26% · Output size: 278.8 KB | File reduction: 93.33% · Output size: 276 KB |
| Fixture findings | Local processing reduced this fixture by about 93%; results depend on the codec and settings. | Default Balanced mode converts the 4,137.9 KB anchor to a 276.0 KB WebP (-93.33%) with 37.75 dB PSNR and 0.9977 SSIM, keeping text and edges crisp. |
| Original historical observation | Squoosh is the gold standard of honest online utilities: uploading 0 bytes to any server, its local WebAssembly engine compresses our 4.24 MB 2048×2048 anchor image down to 278.8 KB (-93.26%) in 0.85s while maintaining PSNR=37.13 dB and SSIM=0.9973 (02_workspace.png). | Running 100% locally in the browser (0.0s upload, 0.54s end-to-end), QuickImageKit compressed our 4,137.9 KB (2048×2048) anchor PNG into a 276.0 KB WebP (-93.33%) at 37.75 dB PSNR and 0.9977 SSIM with sharp text and edges (02_workspace.png, 03_download.png). |
| Suitable uses · historical assessment | Privacy-conscious users, developers, and designers who refuse to upload sensitive photos to cloud servers and want fine-grained codec control with real-time split-screen preview | Privacy-conscious web developers and creators who want zero cloud upload and >90% size reduction into modern WebP format |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | JPEG · Output attached · No watermark in test | WEBP · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (unlimited dimensions, local WebAssembly zero-watermark export) | 2048 × 2048 (Full-size watermark-free WebP) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Focused on single-image interactive codec tuning | Supports multi-image drag-and-drop and batch ZIP download; no external REST API |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 0.85s · End-to-end reference: 0.85s | Recorded local processing time: 0s · End-to-end reference: 0.54s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-26 · 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 | 100% No Login Required (no account system, pure client-side browser utility) | 100% login-free (no account system; pure local browser utility) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace. | Zero registration prompts, ad overlays, or deceptive redirects; dropping an image immediately displays original size, compressed size, reduction percentage, and a direct download button. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Google Chrome Labs | QuickImageKit (Independent Client-Side Toolkit) |
| Recorded origin | Mountain View, California, USA | Undisclosed jurisdiction (Cloudflare global edge) |
| Domain history record | 2018–Present (maintained by Google Chrome DevRel) | 2026–Present |
| Background & reputation assessment | Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground. | Independent client-side browser image toolkit launched in 2026 with clear privacy documentation and contact channels, though without a disclosed corporate entity name. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | On-device processing |
| Third-party tracking record | Not verified | Vercel Web Analytics (_vercel/insights) |
| Engineering & privacy assessment | CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA. | Verified via browser network monitoring: image compression runs 100% locally via Canvas / WebP encoding with zero bytes uploaded to any remote server (upload_s_net = 0s). |
| 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 | 35 / 35 100% open-source and free with zero paywalls, zero in-app purchases, zero resolution caps, and zero ads. Dragging in the 4.24 MB (2048×2048) anchor image immediately enables real-time split-slider comparison and one-click export (01_landing.png, 02_workspace.png, 03_download.png). | 35 / 35 100% free with no account registration, paywalls, or file-count caps; the landing page and workspace clearly disclose upfront that PNG inputs are converted to WebP for maximum compression (Format: PNG → WebP). Dropping our 4,137.9 KB (2048×2048) anchor PNG immediately enabled a free 276.0 KB download (01_landing.png, 02_workspace.png, 03_download.png). |
| Interaction restraint | 30 / 30 Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace. | 29 / 30 Zero registration prompts, ad overlays, or deceptive redirects; dropping an image immediately displays original size, compressed size, reduction percentage, and a direct download button. |
| Background & reputation | 19.5 / 20 Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground. | 14.5 / 20 Independent client-side browser image toolkit launched in 2026 with clear privacy documentation and contact channels, though without a disclosed corporate entity name. |
| Engineering & privacy | 14.5 / 15 CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA. | 14.5 / 15 Verified via browser network monitoring: image compression runs 100% locally via Canvas / WebP encoding with zero bytes uploaded to any remote server (upload_s_net = 0s). |
| Task quality | 61.6 / 65 Reduces file size by 93.26% (4,137.9 KB → 278.8 KB, 14.84× compression ratio) while preserving PSNR = 37.13 dB and SSIM = 0.9973, with full control over OxiPNG, MozJPEG, WebP, and AVIF encoders (61.6/65) | 59.5 / 65 In default Balanced mode, compresses the 4,137.9 KB (2048×2048) PNG anchor to a 276.0 KB WebP (-93.33%, 14.99× ratio) while achieving PSNR = 37.75 dB and SSIM = 0.9977 (59.5/65) |
| Deliverable specifications | 20 / 20 Preserves exact 2048×2048 dimensions (unless Resize is toggled by the user) with unrestricted local PNG/JPEG/WebP/AVIF download (20.0/20) | 17 / 20 Preserves 100% of the 2048×2048 pixel resolution with zero watermarks or login walls and supports multi-file ZIP export; 3 points deducted because PNG inputs are converted to WebP (explicitly disclosed as Format: PNG → WebP) rather than preserving a native PNG container (17.0/20) |
| Processing speed | 14 / 15 100% local multi-threaded WebAssembly encoding with 0.0s network upload latency; re-encodes the 2048×2048 anchor in ~0.85s (14.0/15) | 15 / 15 100% client-side local browser encoding with 0.0s network upload or server wait, completing the 2048×2048 anchor in ~0.54s end-to-end (15.0/15) |
