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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 | TinyWow | Kraken.io | Switch / compare |
|---|---|---|---|
| Background removal | 62/100 2048 × 2048 · PNG | Not tested in topic | Compare in task topic → |
| Image compression | 82/100 2048 × 2048 (3,744.0 KB PNG, -9.52%) · Historical description; output not attached | 47/100 Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · Historical description; output not attached | Active task |
| PDF to Word | 71/100 7.9 KB OOXML package named .doc (100% text, 0 native tables) · Historical description; output not attached | Not tested in topic | Compare in task topic → |
| PDF compression | 93/100 PDF · Output attached | Not tested in topic | Compare in task topic → |
| PDF merge & split | 95/100 PDF · Output attached | Not tested in topic | Compare in task topic → |
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Browse this task →| Criterion | 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 | Kraken.io Web Interface Image compression 47/100 Seven-aspect task score The interface avoids ad interruptions, but free files are capped at 1MB and many features need Pro; this fixture was rejected, so compression quality was not tested. Tested export Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · Historical description; output not attached Historical test · 2026-10-18 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | 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 ↗ | Kraken.io API and Web Interface PRO plans (Free / Micro / Basic / Advanced / Premium / Enterprise); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Account2026-10-21 ↗ Free Free Free 100 MB free testing quota without credit card; Free Web Interface restricts single files to ≤1 MB. Micro Monthly2026-10-21 ↗ USD 5/month — Monthly 500 MB of images/month (USD 5 per additional GB); includes Web Interface PRO (up to 32 MB/file) and full API access. Micro Yearly2026-10-21 ↗ — USD 50/year Annual USD 50/year (2 months free); 500 MB of images/month (USD 5 per additional GB), including Web Interface PRO and API. Basic Monthly2026-10-21 ↗ USD 9/month — Monthly 2 GB of images/month (USD 4 per additional GB); includes Web Interface PRO and full API access. Basic Yearly2026-10-21 ↗ — USD 90/year Annual USD 90/year (2 months free); 2 GB of images/month (USD 4 per additional GB). Advanced Monthly2026-10-21 ↗ USD 19/month — Monthly 5 GB of images/month (USD 3 per additional GB); includes Web Interface PRO and full API access. Advanced Yearly2026-10-21 ↗ — USD 190/year Annual USD 190/year (2 months free); 5 GB of images/month (USD 3 per additional GB). Premium Monthly2026-10-21 ↗ USD 39/month — Monthly 15 GB of images/month (USD 2 per additional GB); includes Web Interface PRO and full API access. Premium Yearly2026-10-21 ↗ — USD 390/year Annual USD 390/year (2 months free); 15 GB of images/month (USD 2 per additional GB). Enterprise Monthly2026-10-21 ↗ USD 79/month — Monthly 60 GB of images/month (USD 1 per additional GB); includes Web Interface PRO and full API access. Enterprise Yearly2026-10-21 ↗ — USD 790/year Annual USD 790/year (2 months free); 60 GB of images/month (USD 1 per additional GB). 11 plan / billing-period records, all listed; — means that period is not recorded. The official pricing page lists the Free Account (100 MB testing quota; Free Web Interface capped at 1 MB/file) and five monthly/yearly tiers (yearly includes 2 months free at USD 50 / 90 / 190 / 390 / 790 per year). All paid plans include Web Interface PRO (up to 32 MB/file), API access, WordPress plugin, and Magento extension. Cancellation, sources & verification recordNo long-term contract; upgrade, downgrade, or cancel anytime under Account Settings. VAT applies to non-business EU customers. Kraken.io official monthly/yearly pricing and FAQ ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ |
| Free & trial allowance on the test date | Free unlimited usage without login; optional paid supporter plan removes ads and CAPTCHAs | Free Web Interface strictly capped at ≤1 MB per file; paid PRO unlocks 32 MB per file |
| Cancellation & refunds | Cancellation and refund terms follow official checkout and help policies. | No long-term contract; upgrade, downgrade, or cancel anytime under Account Settings. VAT applies to non-business EU customers. |
| Disclosure of costs & limits | Clearly displays exact before/after file sizes (4.04 MB -> 3.66 MB, -9%) on the result screen | Small gray footer note below dropzone ('Free Web Interface has a file size limit of 1MB') + inline error row on upload |
| Task quality | ||
| Measured fixture results | File reduction: 9.52% · Output size: 3744 KB | File reduction: 0% · Output size: 4137.9 KB |
| Fixture findings | Default PNG preserved quality but reduced this fixture by only about 10%; other export formats are available. | The roughly 4MB fixture exceeded the recorded 1MB free limit; free compression could not complete. |
| Original historical observation | 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. | Kraken.io's free Web Interface remains stuck in a decade-old '1 MB max file size' quota (01_landing.png): when fed our 4,137.9 KB (2048×2048) benchmark PNG, the queue immediately rejects it with 'File size too large. Upgrade to PRO and get 32MB max file size.' (02_workspace.png, 03_download.png). |
| Suitable uses · historical assessment | Users wanting free no-login near-lossless PNG optimization (48.20 dB PSNR) or one-click conversion to WebP/AVIF/JXL | Only usable for tiny web icons/thumbnails already under 1 MB, or enterprise developers with a paid Kraken.io PRO API subscription |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | No native output obtained; the preview does not establish final export quality. |
| Delivery capabilities | ||
| Recorded export specifications | 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. | Blocked for files >1 MB ('File size too large. Upgrade to PRO and get 32MB max file size.') · 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 (Original Resolution Preserved) | Free tier capped strictly at 1 MB per file (rejects our 4.24 MB benchmark PNG; requires PRO for 32 MB) |
| Watermark observation | Watermark-Free | Watermark-free (only for tiny ≤1 MB files) |
| Batch & API | Supports multi-file upload, live Before/After slider, and format conversion | Supports multi-file and ZIP upload (all subject to the 1 MB/file free cap); full REST API on PRO |
| Recorded free-tier dimensions | Not verified | Not verified |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 8.5s · End-to-end reference: 12s | Network-observed server wait: 0.2s · End-to-end reference: 0.2s |
| 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 | Account required in this test |
| Sign-in methods | No login required (Cloudflare Turnstile check) | No login required for ≤1 MB; lifting the 1 MB cap requires a paid Kraken.io PRO subscription |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | 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. | No fake download ads, but steps 1, 3, and 4 (URL Paster, Image Resizing, Image Conversion) are locked behind 'available in Kraken.io PRO' and any file over 1 MB fails with a PRO upgrade prompt (03_download.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Box20 Media LLC (United States) | Nekkra UG (Kraken.io) |
| Recorded origin | United States | Germany |
| Domain history record | 2021–Present | 2013–Present (13-year image optimization service) |
| Background & reputation assessment | Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. | Operated by Germany-based Nekkra UG (founded in 2013), well-known in legacy WordPress/Magento optimization workflows. |
| 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 | States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. | Clearly states that optimized files remain available for 12 hours before automatic deletion. |
| Retention statement | Claims deletion within 1 hours; deletion not independently verified | Claims deletion within 12 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 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). | 21 / 35 Discloses 'Free Web Interface has a file size limit of 1MB' in small gray footer text below the dropzone (01_landing.png); however, capping a 'Free Online Image Optimizer and Compressor' at 1 MB blocks almost every real-world high-res PNG/JPG that actually needs compression, immediately prompting 'File size too large. Upgrade to PRO and get 32MB max file size.' (02_workspace.png, 03_download.png). |
| Interaction restraint | 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. | 21 / 30 No fake download ads, but steps 1, 3, and 4 (URL Paster, Image Resizing, Image Conversion) are locked behind 'available in Kraken.io PRO' and any file over 1 MB fails with a PRO upgrade prompt (03_download.png). |
| Background & reputation | 18 / 20 Operated by US-based Box20 Media LLC, a popular multi-category free web utility platform. | 16 / 20 Operated by Germany-based Nekkra UG (founded in 2013), well-known in legacy WordPress/Magento optimization workflows. |
| Engineering & privacy | 13.5 / 15 States that all uploaded and processed files are automatically deleted from servers 1 hour after processing. | 10 / 15 Clearly states that optimized files remain available for 12 hours before automatic deletion. |
| Task quality | 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) | 20 / 65 Rejects our 4,137.9 KB (4.24 MB) standard 2048×2048 PNG benchmark anchor due to its strict 1 MB free file size cap (20.0/65) |
| Deliverable specifications | 19.5 / 20 Preserves the full 2048×2048 resolution without watermarks and offers optional .webp/.avif/.jxl export (20.0/20) | 7.7 / 20 Free tier is restricted to files ≤1 MB, preventing free export of standard high-resolution PNG/JPG images (7.7/20) |
| Processing speed | 10.5 / 15 Completes cloud PNG compression in ~5.8s after Turnstile verification (12.8/15) | 10 / 15 Client-side size check rejects >1 MB files in 0.2s with a PRO upgrade notice (10.0/15) |
