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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 | 11zon | Switch / compare |
|---|---|---|---|
| Image compression | 95/100 2048 × 2048 · PNG | 81/100 2048 × 2048 · PNG | Active task |
| PDF to Word | Not tested in topic | 72/100 Legacy OLE2 .doc (25.5 KB, 0 native tables) · Historical description; output not attached | Compare in task topic → |
| PDF compression | Not tested in topic | 75/100 PDF · Output attached | Compare in task topic → |
| PDF merge & split | Not tested in topic | 95/100 PDF · Output attached | 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 | 11zon Image Compressor Image compression 81/100 Seven-aspect task score Free login-free compression runs quickly on-device, but default settings produce banding and several extension ads resemble download buttons. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 |
|---|---|---|
| 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 ↗ | 11zon web PDF-to-Word free tool · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web free2026-10-20 ↗ Free Free Free Free conversion; the page says multiple PDFs can be converted together. Numeric page and file-size limits are not listed. 1 plan / billing-period records, all listed; — means that period is not recorded. The official tool page states free, unlimited conversion. Numeric size and page limits are not published; the claim is not a guarantee for arbitrary files. Cancellation, sources & verification recordCancellation and refund terms follow official checkout and help policies. Official feature and pricing page ↗ · 2026-10-20 Capture 1 ↗ |
| Free & trial allowance on the test date | 100% free with up to 20 images per batch and one-click ZIP download | Free batch compression with both percentage Slider and target-KB Size tabs and no daily cap |
| Cancellation & refunds | Completely free in-browser tool with no accounts or paid subscriptions. | Cancellation and refund terms follow official checkout and help policies. |
| Disclosure of costs & limits | Free batch quota and browser-local privacy guarantee are disclosed upfront above the fold | Automatically compresses at the default 60% level upon upload and displays 'New size: 842 KB' |
| Task quality | ||
| Measured fixture results | File reduction: 61.76% · Output size: 1582.4 KB | File reduction: 79.65% · Output size: 842 KB |
| Fixture findings | Local processing reduced this fixture by about 62%; other formats and images need separate tests. | Strong size reduction suits upload limits; gradients show banding and download ads need care. |
| 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). | 11zon offers a very handy dual-tab interface ('Slider' by % and 'Size' by target KB), shrinking our 4.14 MB PNG down to 842 KB (-79.65%) in 1.8s at its default 60% level; however, the aggressive palette cut causes visible gradient banding (PSNR=32.83 dB) and users must dodge 3 green 'DOWNLOAD EXTENSION' fake ad buttons (02_workspace.png). |
| Suitable uses · historical assessment | Privacy-conscious users who strictly prohibit cloud uploads and need fast 20-image batch PNG/JPEG compression in the browser | Users facing strict government or academic portal upload limits (e.g., forcing a large PNG under 1 MB or an exact KB target) who can tolerate mild background gradient banding |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (native resolution watermark-free PNG direct export) | 2048×2048 (no-login native-resolution watermark-free PNG, supports % Slider and target-KB modes) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports 20-image batch local compression and ZIP archive export; no external API | Supports batch drag-and-drop and one-click Download ZIP; no public API |
| 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 | Recorded local processing time: 1.8s · End-to-end reference: 1.8s |
| Date & fixture | 2026-10-19 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-18 · 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 (no account system on site) | No login required; optional account sign-in in the top header |
| 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. | While the tool itself has no paywall, the workspace is surrounded by 3 green 'DOWNLOAD EXTENSION (2 Easy Steps: 1. Click "Download" 2. Add Trusted Spot Extension)' fake download ad buttons at the top, right sidebar, and sticky bottom bar (02_workspace.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | JPEG-Optimizer (jpeg-optimizer.com) | 11zon.com |
| Recorded origin | Independent Web Utility | India / Global multilingual utility network |
| Domain history record | 2010–Present (16-year established domain) | 2021–Present |
| Background & reputation assessment | Long-running web image optimization utility (jpeg-optimizer.com) operating since 2010, modernized with a pure client-side browser processing pipeline. | Fast-growing multilingual utility network covering PDF and image processing sub-sites. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | On-device processing |
| Third-party tracking record | Not verified | Not verified |
| 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. | Underlying Blob URL inspection confirms that 11zon compresses images locally inside browser memory (~1.8s) without uploading original photos to a remote server. |
| 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 | 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). | 31.5 / 35 100% free without login: uploading the 4.14 MB (2048×2048) anchor image immediately unlocks individual Download and batch Download ZIP buttons with zero paywalls or watermarks (01_landing.png, 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. | 17.5 / 30 While the tool itself has no paywall, the workspace is surrounded by 3 green 'DOWNLOAD EXTENSION (2 Easy Steps: 1. Click "Download" 2. Add Trusted Spot Extension)' fake download ad buttons at the top, right sidebar, and sticky bottom bar (02_workspace.png). |
| 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. | 16.5 / 20 Fast-growing multilingual utility network covering PDF and image processing sub-sites. |
| 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. | 14.5 / 15 Underlying Blob URL inspection confirms that 11zon compresses images locally inside browser memory (~1.8s) without uploading original photos to a remote server. |
| 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) | 48 / 65 Defaults its 'Compression Level' slider to an aggressive 60%, slashing the 4,137.9 KB PNG down to 842.0 KB (-79.65%, 4.91× ratio) and offering a 'Size' tab for target-KB compression; however, aggressive palette reduction lowers PSNR to 32.83 dB (SSIM = 0.9928) with visible contour banding across the background wall gradient (48.0/65) |
| Deliverable specifications | 20 / 20 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | 19.5 / 20 Preserves 2048×2048 native resolution and PNG format without login or watermarks, supporting both single-file and ZIP exports (19.5/20) |
| Processing speed | 13.8 / 15 100% local browser computation (0s network upload), completing 4.14 MB PNG compression in ~1.4s (13.8/15) | 14.5 / 15 Local in-browser quantization completes in ~1.8s after file selection (14.5/15) |
