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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 | TinyWow | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 62/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 95/100 2048 × 2048 · PNG | 82/100 2048 × 2048 (3,744.0 KB PNG, -9.52%) · Historical description; output not attached | Active task |
| PDF to Word | Not tested in topic | 71/100 7.9 KB OOXML package named .doc (100% text, 0 native tables) · Historical description; output not attached | Compare in task topic → |
| PDF compression | Not tested in topic | 93/100 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 | TinyWow Compress Image Size Image compression 82/100 Seven-aspect task score Free login-free access offers many formats but requires verification and cloud upload; default PNG settings preserve quality with only about 10% size reduction. Tested export 2048 × 2048 (3,744.0 KB PNG, -9.52%) · Historical description; output not attached Historical test · 2026-10-19 |
|---|---|---|
| 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 ↗ | TinyWow current PDF-specific and all-tool subscriptions; USD · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web free2026-10-20 ↗ Free Free Free No registration; free PDF tools are available, but exact daily allowances are not listed. PDF Unlimited2026-10-20 ↗ USD 9/month USD 72/year Monthly 45+ PDF tools, unlimited PDF use, no daily limits or ads Annual 45+ PDF tools, unlimited PDF use, no daily limits or ads TinyWow Unlimited2026-10-20 ↗ USD 20/month USD 180/year Monthly All PDF/image/writing/video/file tools; no ads or captcha Annual All PDF/image/writing/video/file tools; no ads or captcha 5 plan / billing-period records, all listed; — means that period is not recorded. Monthly and annual modes confirm annual bills USD 72 / 180. Current PDF Unlimited and all-tool TinyWow Unlimited replace the historical Supporter description. Other single-category subscriptions do not include PDF. Numeric free limits and cancellation terms remain unspecified. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancellation and refund terms follow official checkout and help policies. Official feature and pricing page ↗ · 2026-10-20 Capture 1 ↗ Official feature and pricing page ↗ · 2026-10-20 Capture 1 ↗ 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 unlimited usage without login; optional paid supporter plan removes ads and CAPTCHAs |
| 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 | Clearly displays exact before/after file sizes (4.04 MB -> 3.66 MB, -9%) on the result screen |
| Task quality | ||
| Measured fixture results | File reduction: 61.76% · Output size: 1582.4 KB | File reduction: 9.52% · Output size: 3744 KB |
| Fixture findings | Local processing reduced this fixture by about 62%; other formats and images need separate tests. | Default PNG preserved quality but reduced this fixture by only about 10%; other export formats are available. |
| 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). | At its default Quality = 90% setting while keeping PNG format, TinyWow applies conservative quantization that preserves near-lossless pixel fidelity (PSNR 48.20 dB, SSIM 0.9996) with a modest -9.52% byte reduction; switching the output dropdown to .webp or .avif yields much larger savings. |
| 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 wanting free no-login near-lossless PNG optimization (48.20 dB PSNR) or one-click conversion to WebP/AVIF/JXL |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 (3,744.0 KB PNG, -9.52%) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. |
| Historical specification note · not an official maximum | 2048×2048 (native resolution watermark-free PNG direct export) | 2048×2048 (Original Resolution Preserved) |
| Watermark observation | Watermark-free | Watermark-Free |
| Batch & API | Supports 20-image batch local compression and ZIP archive export; no external API | Supports multi-file upload, live Before/After slider, and format conversion |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 1.4s · End-to-end reference: 1.4s | Network-observed server wait: 8.5s · End-to-end reference: 12s |
| 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 | No login in this test |
| Sign-in methods | No login required (no account system on site) | No login required (Cloudflare Turnstile check) |
| 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. | Provides a built-in Before/After visual comparison slider, an adjustable Quality slider (default 90%), and optional one-click conversion to .webp, .avif, or .jxl. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | JPEG-Optimizer (jpeg-optimizer.com) | Box20 Media LLC (United States) |
| Recorded origin | Independent Web Utility | United States |
| 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. | Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. |
| 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 | 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. | States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 1 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). | 31 / 35 Completely free with no account registration required (01_landing.png); after a single Cloudflare Turnstile check, it compresses our 4.04 MiB PNG and provides an immediate direct download (02_result.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. | 23.5 / 30 Provides a built-in Before/After visual comparison slider, an adjustable Quality slider (default 90%), and optional one-click conversion to .webp, .avif, or .jxl. |
| 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. | 18 / 20 Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. |
| 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. | 13.5 / 15 States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. |
| 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) | 50.5 / 65 Size Reduction: -9.52% (4,137.9 KB → 3,744.0 KB, 1.11× ratio) · PSNR: 48.20 dB · SSIM: 0.9996 (49.2/65) |
| 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 the full 2048×2048 resolution without watermarks and offers optional .webp/.avif/.jxl export (20.0/20) |
| Processing speed | 13.8 / 15 100% local browser computation (0s network upload), completing 4.14 MB PNG compression in ~1.4s (13.8/15) | 10.5 / 15 Completes cloud PNG compression in ~5.8s after Turnstile verification (12.8/15) |
