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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 | TinyPNG | online-convert.com | Switch / compare |
|---|---|---|---|
| Image compression | 93/100 2048 × 2048 · PNG | 90/100 2048 × 2048 · PNG | Active task |
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Browse this task →| Criterion | TinyPNG Image compression 93/100 Seven-aspect task score Clear free allowances and login-free batch downloads balance PNG size and quality; the tested limits were 20 images at 5MB each, processed in the cloud. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 | Online-Convert Compress PNG Image compression 90/100 Seven-aspect task score Veteran German file conversion platform offering guest PNG compression (2048×2048) with 55.99% size reduction, 39.27 dB PSNR, 0.9984 SSIM, and intact alpha channel in 7.5s server wait. Tested export 2048 × 2048 · PNG Historical test · 2026-11-02 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | TinyPNG online optimizer plans (Web Free / Web Pro / Web Ultra); USD · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web Free2026-10-21 ↗ Free Free Free Free without login; up to 20 images per session (max 5 MB each) for AVIF/WebP/PNG/JPEG compression and 3 format conversions per session. Web Pro (Annual)2026-10-21 ↗ — Annual price not verified Annual Unlimited image compressions, up to 75 MB file size, folder upload, and ad-free; card displays USD 3.25/month equivalent ("Per month | Billed annually"). Pricing card displays only the USD 3.25/month equivalent ("Billed annually") without printing the annual invoice total on the public page. Web Ultra (Annual)2026-10-21 ↗ — Annual price not verified Annual Unlimited compressions and format conversions, up to 150 MB file size, fastest speed, and ad-free; card displays USD 12.42/month equivalent ("Per month | Billed annually"). Pricing card displays only the USD 12.42/month equivalent ("Billed annually") without printing the annual invoice total on the public page. 3 plan / billing-period records, all listed; — means that period is not recorded. The official /pricing/web page lists Web Free (USD 0, 20 images/session, max 5 MB/file, 3 format conversions/session), Web Pro (displayed as USD 3.25/month billed annually, unlimited compressions, max 75 MB/file), and Web Ultra (displayed as USD 12.42/month billed annually, unlimited compressions and conversions, max 150 MB/file). Because the Web Pro and Web Ultra cards display only rounded monthly equivalents ("Per month | Billed annually") without printing the annual invoice totals on the card, the annual totals are marked unverified. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCredit card subscriptions auto-renew annually (with email reminders 1 month and 1 week prior) and can be disabled anytime in the account dashboard; upgrading from Web Pro to Web Ultra refunds remaining Web Pro months. TinyPNG official website and Web subscription pricing page ↗ · 2026-10-21 Capture 1 ↗ · Capture 2 ↗ | Online-Convert free trial credits, Pay As You Go packages and subscriptions · 2026-10-31 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Trial2026-10-31 ↗ Free Free Free 16 free trial credits upon signup without payment details Supports evaluation of most conversion and compression tools；Shared standard queue with file size limits；No automatic renewal；Valid until credits exhausted Pay As You Go (240 Credits)2026-10-31 ↗ USD 8 · one-time payment Usage / one-time Usage / one-time 240 credits ($0.0333/credit), valid for 1 year Access to all tools, no waiting queue, priority processing Rules [1] [2] [3]Pay As You Go (480 Credits)2026-10-31 ↗ USD 14 · one-time payment Usage / one-time Usage / one-time 480 credits ($0.0292/credit), valid for 1 year Full tools access, zero wait queue, ad-free experience Rules [1] [2] [3]Monthly Subscription (2800 Credits)2026-10-31 ↗ USD 29/month — Monthly 2800 credits per month (up to 2800 standard tasks or 350 AI tasks) All features, no waiting queue, batch concurrent processing, no ads；Unused monthly credits do not roll over；Renews monthly, cancel anytime in dashboard；Valid during active billing period Annual Subscription (2800 Credits/mo)2026-10-31 ↗ — Annual price not verified Annual 2800 credits per month; UI states $23.17 USD/month equivalent without full annual total All features, no waiting queue, batch concurrent processing, no ads；Annual billing total not stated upfront; held as null with partial coverage；Renews annually；Valid during annual period 5 plan / billing-period records, all listed; — means that period is not recorded. Anonymous conversions for basic files; 16 free trial credits upon registration; Pay As You Go packs: 240 credits for $8, 480 for $14; monthly subscription $29/mo for 2800 credits; annual plans state monthly equivalents without full upfront invoice total. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancellation and refund terms unverified Online-Convert Plans & Pricing ↗ · 2026-10-31 Capture 1 ↗ |
| Free & trial allowance on the test date | Up to 20 images per day, max 5 MB per file on the free web tier | Guest users can compress everyday files directly; 16 trial credits granted upon registration |
| Cancellation & refunds | Credit card subscriptions auto-renew annually (with email reminders 1 month and 1 week prior) and can be disabled anytime in the account dashboard; upgrading from Web Pro to Web Ultra refunds remaining Web Pro months. | Not verified |
| Disclosure of costs & limits | 5 MB and 20-image limits are printed directly inside the upload dropzone before file selection | Transparent upfront free tier disclosure and clear credit packs with zero post-conversion paywall traps |
| Task quality | ||
| Measured fixture results | File reduction: 57.73% · Output size: 1749 KB | File reduction: 55.99% · Output size: 1821 KB |
| Fixture findings | Kept PNG format while reducing this fixture by about 58%; check free file-size and quantity limits. | Guest export of native 2048×2048 PNG (1.8 MB · -55.99%) with high visual fidelity (39.27 dB PSNR, 0.9984 SSIM) and intact alpha channel in 7.5s server wait. |
| Original historical observation | TinyPNG remains the gold standard for smart PNG quantization: without changing format or pixel dimensions (2048×2048), it cuts our 4.24 MB anchor PNG by 57.73% (1,749.0 KB) while achieving the highest fidelity in the category at PSNR=40.09 dB and SSIM=0.9987 (02_workspace.png, 03_download.png). | Online-Convert cloud backend compressed the 4,137.9 KB anchor image to 1,821.0 KB (55.99% reduction) in 7.5s server wait, achieving 39.27 dB PSNR and 0.9984 SSIM while maintaining sharp text edges and clean transparency. |
| Suitable uses · historical assessment | Frontend developers, UI designers, and content editors who need to keep native PNG format (and alpha support) while cutting file weight by ~60% with virtually zero visual loss (PSNR > 40 dB) | Users seeking a trusted guest-usable tool to shrink PNG files by over 50% with high fidelity (PSNR 39.27 dB, SSIM 0.9984) and cloud batch workflows |
| 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 preserved, watermark-free PNG) | 2048 × 2048 (original size watermark-free PNG) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports 20-file batch drag-and-drop, Photoshop plugin, and official Tinify REST API | Supports batch queuing and advanced conversion parameter tuning |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 4.2s · End-to-end reference: 6.3s | Network-observed server wait: 7.5s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-11-02 · 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 for free tier | Basic compression usable without login; email/password, Google, and Apple login supported for advanced tiers |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | No forced sign-up modal, no countdown gates, and no watermark traps; clicking Download immediately exports the compressed PNG. | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Tinify B.V. / Voormedia B.V. | QaamGo Media GmbH |
| Recorded origin | Amsterdam, Netherlands | Cologne, Germany |
| Domain history record | 2012–Present (14-year PNG optimization benchmark) | Domain registered in 2009 (operating for over 15 years) |
| Background & reputation assessment | Developed and operated by Voormedia B.V. in Amsterdam, Netherlands since 2012—the global benchmark for smart PNG quantization. | Not verified |
| External reputation record | Not verified | Established German file conversion suite with transparent EU corporate and GDPR disclosures. |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Google Analytics · Google AdSense |
| Engineering & privacy assessment | HTTPS encrypted upload to api.tinify.com; temporary compressed files are automatically purged after a short window. | Not verified |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Claims deletion within 24 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | 33 / 35 Clearly states free tier limits on the upload dropzone ('Up to 20 images, max 5 MB each'). Uploading the 4.24 MB (2048×2048) anchor PNG requires no login and immediately provides a free download button (01_landing.png, 02_workspace.png, 03_download.png). | |
| Interaction restraint | 27.5 / 30 No forced sign-up modal, no countdown gates, and no watermark traps; clicking Download immediately exports the compressed PNG. | |
| Background & reputation | 19.5 / 20 Developed and operated by Voormedia B.V. in Amsterdam, Netherlands since 2012—the global benchmark for smart PNG quantization. | |
| Engineering & privacy | 13 / 15 HTTPS encrypted upload to api.tinify.com; temporary compressed files are automatically purged after a short window. | |
| Task quality | 61.1 / 65 Preserves native PNG format and 2048×2048 dimensions while shrinking 4,137.9 KB to 1,749.0 KB (-57.73%, 2.37× ratio) with industry-leading PSNR = 40.09 dB and SSIM = 0.9987 (59.9/65) | 60 / 65 Size Reduction: -55.99% (4137.9 KB → 1821 KB, 2.27× ratio) · PSNR: 39.27 dB · SSIM: 0.9984 |
| Deliverable specifications | 20 / 20 Exports a watermark-free 2048×2048 PNG without login (capped at 5 MB per file and 20 files/day on the free tier) (19.0/20) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 2048 × 2048 (original size watermark-free PNG) |
| Processing speed | 12.5 / 15 Server-side smart quantization on api.tinify.com completes in ~4.2s (13.0/15) | 12 / 15 Network-observed server wait: 7.5s (API mode: async_verified; network upload N/A / end-to-end N/A shown for reference only, never penalized) |
