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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 | JPEG-Optimizer | imageresizer.com | Switch / compare |
|---|---|---|---|
| Image compression | 95/100 2048 × 2048 · PNG | 91/100 2048 × 2048 · PNG | Active task |
| Image upscaling | Not tested in topic | 90/100 2048 × 2048 · PNG | Compare in task topic → |
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Browse this task →| Criterion | JPEG-Optimizer (Browser-Local PNG/JPEG/GIF Compressor) Image compression 95/100 Seven-aspect task score Free login-free on-device processing supports target sizes, retaining full-size PNG with about 62% reduction in this run; display ads occupy the sidebar. Tested export 2048 × 2048 · PNG Historical test · 2026-10-19 | ImageResizer Image compression 91/100 Seven-aspect task score ImageResizer provides login-free cloud compression with full-resolution 2048×2048 watermark-free export, reducing file size by 78.3% (4.04MB to 899KB) in 5.99s server time; a 10MB single-file free limit and standard banner ads apply. Tested export 2048 × 2048 · PNG Historical test · 2026-11-01 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | JPEG-Optimizer in-browser bulk image compressor and resizer · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Completely Free Web2026-10-21 ↗ Free Free Free Completely free without login; up to 20 images at once processed locally in the browser for JPEG/PNG/GIF. 1 plan / billing-period records, all listed; — means that period is not recorded. The official page states "Completely Free. 20 images at once." and "Files are NEVER sent to the server, and all processing is handled via your own browser," supporting JPEG/PNG/GIF quality, max KB size, and max dimension settings. Cancellation, sources & verification recordCompletely free in-browser tool with no accounts or paid subscriptions. JPEG-Optimizer official page and privacy notice ↗ · 2026-10-21 Capture 1 ↗ | Site-wide image resizing, compression, cropping, and conversion subscriptions · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free 10MB file limit, up to 5 images per batch, 10 images/day across premium tools Access to basic image resizer, compressor, converter, and cropping tools；Ad-supported, 5 images per batch, 10MB per image；Free indefinitely, no renewal；Perpetual access Pro2026-11-01 ↗ USD 6.99/month — Monthly 50MB file limit, up to 20 images per batch, 100 images/day across premium tools Full access to Image Resizer tools, zero ads, priority processing；50MB per image, 20 images per batch Rules [1] [2]Ultra2026-11-01 ↗ USD 9.99/month — Monthly 1GB file limit, up to 100 images per batch, unlimited images Highest specifications across all tools, 24/7 dedicated support, zero ads；1GB per image, 100 images per batch Rules [1] [2]3 plan / billing-period records, all listed; — means that period is not recorded. Free tier covers up to 10MB/image and 5 images/batch; Pro ($6.99/mo) and Ultra ($9.99/mo) offer higher limits with no hidden fees and cancel-anytime policy. Cancellation, sources & verification recordCancellation and refund terms unverified ImageResizer Official Pricing ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | 100% free with up to 20 images per batch and one-click ZIP download | 10MB per file limit, up to 5 images per batch, no daily hard cutoff |
| Cancellation & refunds | Completely free in-browser tool with no accounts or paid subscriptions. | Not verified |
| Disclosure of costs & limits | Free batch quota and browser-local privacy guarantee are disclosed upfront above the fold | Not verified |
| Task quality | ||
| Measured fixture results | File reduction: 61.76% · Output size: 1582.4 KB | File reduction: 78.26% · Output size: 899.4 KB |
| Fixture findings | Local processing reduced this fixture by about 62%; other formats and images need separate tests. | Retained original PNG format and alpha channel, scoring 30.58 dB PSNR and 0.9879 SSIM with clean metallic texture and no artifacts. |
| Original historical observation | Despite its legacy 'JPEG-Optimizer' name, the tool fully supports client-side PNG, JPEG, and GIF compression. It shrinks our 4.14 MB anchor PNG by 61.76% to 1.55 MB locally in 1.4s with PSNR=39.35 dB and SSIM=0.9984 (02_workspace.png, 03_download.png). | Uploaded 4.04 MB (4,137.9 KB) test image; under default smart compression, cloud processing completed in 5.99 seconds yielding 899.41 KB deliverable (78.26% reduction). Micro-details remained unblurred, with 30.58 dB PSNR and 0.9879 SSIM; provides interactive before/after slider with one-click download. |
| Suitable uses · historical assessment | Privacy-conscious users who strictly prohibit cloud uploads and need fast 20-image batch PNG/JPEG compression in the browser | Not verified |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 · PNG · Check watermark record |
| Historical specification note · not an official maximum | 2048×2048 (native resolution watermark-free PNG direct export) | 2048×2048 (Zero-watermark native PNG export without login) |
| Watermark observation | Watermark-free | Not verified |
| Batch & API | Supports 20-image batch local compression and ZIP archive export; no external API | Not verified |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 1.4s · End-to-end reference: 1.4s | Network-observed server wait: 5.99s · End-to-end reference: 15.36s |
| 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 | Not verified |
| Sign-in methods | No login required (no account system on site) | Available without login; supports email registration and paid subscriptions |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | One-click quality slider, target max KB, and dimension controls without login; exports directly via a browser blob: URL with only standard sidebar display ads. | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | JPEG-Optimizer (jpeg-optimizer.com) | ImageResizer.com |
| Recorded origin | Independent Web Utility | United States |
| Domain history record | 2010–Present (16-year established domain) | Founded in 2012 |
| Background & reputation assessment | Long-running web image optimization utility (jpeg-optimizer.com) operating since 2010, modernized with a pure client-side browser processing pipeline. | Not verified |
| External reputation record | Not verified | Established free online image utility with over 14 years of reliable operation, trusted by developers and creators. |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Google Analytics · Google AdSense |
| Engineering & privacy assessment | Explicitly promises and verified via network inspection: 'Privacy: Files are NEVER sent to the server, and all processing is handled via your own browser.' 100% client-side zero-upload execution. | Not verified |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 6 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 33.5 / 35 Clearly states 'Completely Free. 20 images at once.' on the landing page (01_landing.png) with zero paywalls, zero sign-up gates, and zero hidden limits; importing our 4.14 MB anchor PNG immediately generates a free local Download link and ZIP batch archive button (02_workspace.png, 03_download.png). | |
| Interaction restraint | 27.5 / 30 One-click quality slider, target max KB, and dimension controls without login; exports directly via a browser blob: URL with only standard sidebar display ads. | |
| Background & reputation | 18 / 20 Long-running web image optimization utility (jpeg-optimizer.com) operating since 2010, modernized with a pure client-side browser processing pipeline. | |
| Engineering & privacy | 15 / 15 Explicitly promises and verified via network inspection: 'Privacy: Files are NEVER sent to the server, and all processing is handled via your own browser.' 100% client-side zero-upload execution. | |
| Task quality | 61.2 / 65 Preserves native 2048×2048 PNG format at default 80% quality while shrinking 4,137.9 KB down to 1,582.4 KB (61.76% reduction, 2.61× ratio) with PSNR = 39.35 dB and SSIM = 0.9984 (61.2/65) | 58 / 65 Size Reduction: -78.26% (4137.9 KB → 899.4 KB, 4.6× ratio) · PSNR: 30.58 dB · SSIM: 0.9879 |
| Deliverable specifications | 20 / 20 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 2048×2048 (Zero-watermark native PNG export without login) |
| Processing speed | 13.8 / 15 100% local browser computation (0s network upload), completing 4.14 MB PNG compression in ~1.4s (13.8/15) | 12.5 / 15 Network-observed server wait: 5.99s (API mode: cloud_server; network upload 9.37s / end-to-end 15.36s shown for reference only, never penalized) |
