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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 | CompressNow | TinyWow | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 62/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 83/100 PNG · Output attached | 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 | CompressNow Image compression 83/100 Seven-aspect task score Free login-free on-device processing discloses format conversion upfront; size reduction is substantial, but PNG export is unavailable and transparency needs care. Tested export PNG · Output attached Historical test · 2026-10-18 | 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 | Compressnow online in-browser image compressor · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Compressnow Free Web2026-10-21 ↗ Free Free Free Free without login; up to 30 MB per image and up to 30 images at a time; individual or ZIP download. 1 plan / billing-period records, all listed; — means that period is not recorded. The official page and FAQ state that compression runs in the browser (images are not stored), supporting up to 30 MB per image and up to 30 images at a time for JPG/JPEG/PNG/GIF/WebP (output as JPG or WebP), with no paid tiers. Cancellation, sources & verification recordCompletely free web tool with no accounts or subscription charges. Compressnow official tool page and FAQ ↗ · 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, up to 30 MB per image and up to 30 images per batch | Free unlimited usage without login; optional paid supporter plan removes ads and CAPTCHAs |
| Cancellation & refunds | Completely free web tool with no accounts or subscription charges. | Cancellation and refund terms follow official checkout and help policies. |
| Disclosure of costs & limits | Discloses upfront at the top of the page that output format is JPG or WebP ('Transparent areas turn white') | 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: 85.99% · Output size: 579.8 KB | File reduction: 9.52% · Output size: 3744 KB |
| Fixture findings | Local compression reduced this fixture by about 86%; export changes to JPG or WebP, not PNG. | Default PNG preserved quality but reduced this fixture by only about 10%; other export formats are available. |
| Original historical observation | CompressNow is a fast, 100% client-side compressor: your image never leaves your browser, and in 0.9s it shrinks our 4.24 MB benchmark PNG to 579.8 KB (-85.99%, 7.14×) at 42.34 dB PSNR (02_workspace.png). Note that it only outputs JPG or WebP (disclosed upfront), so users with transparent PNGs should select the WebP toggle. | 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 | Users who want to rapidly shrink bulky PNG screenshots or photos locally in-browser into high-quality JPG or WebP (-86% size) without uploading files to any server | 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 | PNG · Output attached · 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 full-resolution free export (outputs as JPG or WebP; does not export native PNG) | 2048×2048 (Original Resolution Preserved) |
| Watermark observation | Watermark-free | Watermark-Free |
| Batch & API | Supports up to 30 images (≤30 MB each) with one-click DOWNLOAD ZIP | Supports multi-file upload, live Before/After slider, and format conversion |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 0.9s · End-to-end reference: 0.9s | Network-observed server wait: 8.5s · End-to-end reference: 12s |
| Date & fixture | 2026-10-18 · 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 registration or login required (100% local tool) | No login required (Cloudflare Turnstile check) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Clean single-page workspace with a live compression level slider (default 20%) and a single display ad banner, with zero popups or registration walls (02_workspace.png, 03_download.png). | 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 | CompressNow | Box20 Media LLC (United States) |
| Recorded origin | France / European Independent Developer | United States |
| Domain history record | 2012–Present (14-year online image compression tool) | 2021–Present |
| Background & reputation assessment | Classic multi-language online image weight reducer operating for over 10 years (currently V6.0). | 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 | 100% local in-browser processing (`blob:https://compressnow.com/...`); FAQ explicitly states 'Compression runs in your browser: your images never leave your device.' | 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 | 31 / 35 100% free for up to 30 MB per image and 30 images at a time; transparently discloses next to the Format toggle: 'Format: JPG | WebP — Works everywhere. Transparent areas turn white.' (01_landing.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 | 24 / 30 Clean single-page workspace with a live compression level slider (default 20%) and a single display ad banner, with zero popups or registration walls (02_workspace.png, 03_download.png). | 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 | 17 / 20 Classic multi-language online image weight reducer operating for over 10 years (currently V6.0). | 18 / 20 Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. |
| Engineering & privacy | 15 / 15 100% local in-browser processing (`blob:https://compressnow.com/...`); FAQ explicitly states 'Compression runs in your browser: your images never leave your device.' | 13.5 / 15 States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. |
| Task quality | 52.2 / 65 Shrinks file size by 85.99% (7.14×) at 42.34 dB PSNR and 0.9992 SSIM, though output format is converted to JPG or WebP (52.2/65) | 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 | 15 / 20 Preserves full 2048×2048 dimensions and supports 30 MB files, but converts PNG inputs to JPG (or WebP) rather than native `.png` (15.0/20) | 19.5 / 20 Preserves the full 2048×2048 resolution without watermarks and offers optional .webp/.avif/.jxl export (20.0/20) |
| Processing speed | 14 / 15 100% local browser Canvas compression with 0 bytes uploaded in ~0.9s (14.0/15) | 10.5 / 15 Completes cloud PNG compression in ~5.8s after Turnstile verification (12.8/15) |
