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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 | DupliChecker | TinyWow | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 62/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 90/100 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 | DupliChecker Image Compressor Image compression 90/100 Seven-aspect task score Upfront free limits and login-free batch downloads accompany roughly halved PNG size; each image is capped at 5MB amid many ads and tool links. 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 | DupliChecker online Image Compressor tool (excludes separate Plagiarism, Paraphrasing, and Reverse Image Search plans) · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Image Compressor Free2026-10-21 ↗ Free Free Free Free without login; up to 10 images per batch, max 5 MB each (JPG/JPEG/PNG). 1 plan / billing-period records, all listed; — means that period is not recorded. The Image Compressor page explicitly states "100% Free" and supports up to 10 images per batch at max 5 MB each (JPG/JPEG/PNG) without login. Site-wide Pricing links cover Plagiarism, Paraphrasing, and Reverse Image Search quotas; image compression requires no subscription. Cancellation, sources & verification recordThe Image Compressor tool is free to use and involves no subscription charges. DupliChecker official online Image Compressor page ↗ · 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 | Free guests can upload up to 10 images per batch, max 5 MB per image | Free unlimited usage without login; optional paid supporter plan removes ads and CAPTCHAs |
| Cancellation & refunds | The Image Compressor tool is free to use and involves no subscription charges. | Cancellation and refund terms follow official checkout and help policies. |
| Disclosure of costs & limits | 'Upload Up to 10 images, max 5MB each' is printed directly inside the upload box | 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: 53.34% · Output size: 1930.7 KB | File reduction: 9.52% · Output size: 3744 KB |
| Fixture findings | Reduced this fixture by about 53% without login or a watermark; the page contains many surrounding links. | Default PNG preserved quality but reduced this fixture by only about 10%; other export formats are available. |
| Original historical observation | While DupliChecker's page has many SEO cross-links, its core compression pipeline is solid: shrinking our 4.14 MB anchor PNG by 53.34% to 1.89 MB at PSNR=39.54 dB and SSIM=0.9985 with no login required (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 | Users who want quick no-login compression for PNG/JPEG files under 5 MB with manual quality slider control | 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 10-image batch upload and one-click Download All | 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 | Network-observed server wait: 5.4s · End-to-end reference: 7.6s | 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 login required (Cloudflare Turnstile check) |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots. | 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 | DupliChecker (duplichecker.com) | Box20 Media LLC (United States) |
| Recorded origin | Multi-Tool Web Portal | United States |
| Domain history record | 2006–Present (20-year utility portal) | 2021–Present |
| Background & reputation assessment | Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006. | 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 | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | Delivers compressed outputs via temporary AWS S3 buckets (temp-ca.s3.amazonaws.com) and states that temporary files are automatically purged. | States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Claims deletion within 1 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 31 / 35 Clearly states free tier limits inside the dropzone ('Upload Up to 10 images, max 5MB each.', 01_landing.png); uploading our 4.14 MB anchor PNG and clicking Compress Image immediately reveals a free 'Save -53% (1.89 MB)' download button with zero paywalls (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 | 24.5 / 30 Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots. | 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 | 16.5 / 20 Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006. | 18 / 20 Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. |
| Engineering & privacy | 12.5 / 15 Delivers compressed outputs via temporary AWS S3 buckets (temp-ca.s3.amazonaws.com) and states that temporary files are automatically purged. | 13.5 / 15 States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. |
| Task quality | 60.2 / 65 Preserves native 2048×2048 PNG format while reducing 4,137.9 KB to 1,930.7 KB (53.34% reduction, 2.14× ratio) with PSNR = 39.54 dB and SSIM = 0.9985 (60.2/65) | 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 | 11.8 / 15 Cloud upload and AWS S3 compressed delivery complete in ~7.6s (~5.4s server processing) (11.8/15) | 10.5 / 15 Completes cloud PNG compression in ~5.8s after Turnstile verification (12.8/15) |
