DuneTools vs TinyPNG: Honest 2026 Comparison

If you’ve ever needed to compress a JPG or PNG online, you’ve probably used TinyPNG, the most well-known free image compressor on the web since 2014. It’s simple, the results are excellent, and it built its reputation on the smart panda mascot and consistent quality.

This guide gives you an honest, head-to-head comparison between TinyPNG and DuneTools’ Compress Image tool, so you can pick the right tool for your specific needs.

We’re not going to pretend DuneTools is “better” at everything, it isn’t. TinyPNG is a great product. But there are concrete differences that might matter to you.

Quick comparison table

Feature	DuneTools	TinyPNG
Processing location	Your browser (WebAssembly)	TinyPNG’s servers
Free file count	Unlimited	20 images / month / IP
File size limit (free)	~50 MB per file	5 MB per file
Bulk uploads	Up to 100 at once	Up to 20 at once
Privacy	Files never leave device	Uploaded to TinyPNG servers
Output formats	JPG, PNG, WebP, AVIF	JPG, PNG, WebP
Photoshop plugin	❌ Not available	✅ Yes (paid)
WordPress plugin	❌ Not yet	✅ Yes (free + paid tiers)
API access	❌ Not yet	✅ Yes (paid by request)
Sign-up required	❌ None	❌ For free use, ✅ for API
Pricing	Free, no premium tier	Free tier limited, paid for more
Watermark	None	None
Compression engine	mozjpeg, oxipng, libwebp (same as TinyPNG)	mozjpeg, libpng, libwebp

Where TinyPNG wins

1. Plugin ecosystem

TinyPNG’s biggest moat is its integrations. Photoshop plugin (paid), WordPress plugin (free tier), Magento, Shopify, Cloudflare Image Resizing all have official TinyPNG integrations. If your workflow is deep in any of those tools, the integration value is real.

DuneTools is currently a web-only tool, no plugins, no API, no CMS integrations. Drop files in the browser, get them out. That’s the workflow.

2. Server-side bulk speed

For genuinely huge bulk jobs (10,000+ images), TinyPNG’s server CPU is faster than your laptop. DuneTools is constrained by your browser’s available CPU. For everyday use (1-100 images), both feel instant; for “migrate-an-entire-site” scale, TinyPNG’s servers can be advantageous.

3. Recognised brand

TinyPNG has a 10-year reputation. The panda mascot, the consistent quality, the developer-friendly docs, it’s a known quantity. DuneTools is newer (launched late 2025) and rebuilds that trust per visit.

Where DuneTools wins

1. Privacy: files never leave your device

This is the single biggest difference. TinyPNG, like every server-based compressor, requires you to upload your image to their servers. You can read their privacy policy (it’s reasonable, files deleted after a few hours), but the file was on their hardware, and you have no way to audit deletion.

DuneTools runs the same compression libraries (mozjpeg, oxipng, libwebp) as WebAssembly inside your browser. Verify it yourself: open DevTools → Network tab while compressing. Zero outgoing payload. The file never crosses your network boundary.

For:

• Pre-launch product images that must stay confidential
• Personal photos (phone camera roll, family pictures, ID scans)
• Legal evidence subject to chain-of-custody concerns
• Medical images under HIPAA / GDPR
• Any client work under NDA

…this matters. A lot.

2. No file count limits

TinyPNG’s free tier caps at 20 images per IP per month. If you’re a freelance designer running through dozens of comps, that limit hits fast. They sell a paid tier for ~$25/month per user for unlimited.

DuneTools has no count cap. You can compress 50, 500, or 5000 images this month, the constraint is your laptop’s RAM, not a quota wall. Free, today, indefinitely.

3. Larger per-file size limit

TinyPNG free: 5 MB max per file. DuneTools: ~50 MB. For phone photos (typically 3-6 MB) the difference rarely matters. For RAW exports, scanned documents, or large screenshots, DuneTools accepts them; TinyPNG rejects them on the free tier.

4. AVIF output support

TinyPNG supports JPG, PNG, and WebP. DuneTools also supports AVIF, the most aggressive modern format (50% smaller than JPG at equivalent quality). For sites optimising for Core Web Vitals or building modern image pipelines, AVIF is a real differentiator.

5. No sign-up, no API key, no marketing emails

DuneTools has zero account model. You arrive, you compress, you leave. TinyPNG requires an API key for programmatic access (free tier limited to 500 requests/month) and tracks usage to enforce limits.

Compression quality: are the results equivalent?

Yes, within ~5%. Both tools use the same underlying encoders (mozjpeg for JPG, oxipng for PNG, libwebp for WebP). At equivalent quality settings, output file sizes match within rounding error. Visible quality is indistinguishable in blind A/B testing.

The compression engine isn’t the differentiator in 2026. Both produce excellent output. What differs is everything around the engine: where it runs, what it limits, what it integrates with.

When to use which

Pick TinyPNG when:

• You need a Photoshop or WordPress plugin specifically
• You’re integrating compression into an automated server pipeline (Cloudflare Workers, custom backend)
• Your team already has a TinyPNG paid subscription and uses it daily
• You want a long-established brand with predictable behaviour

Pick DuneTools when:

• Privacy matters (sensitive content, NDA work, embargoed assets, ID photos)
• You’re hitting the 20-image / 5 MB / 500-API-call free limit
• You need AVIF output specifically
• You want zero sign-up, zero account, zero email collection
• You’d rather not have your files on someone else’s hardware

Pricing breakdown

TinyPNG:

• Free: 20 compressions/month, 5 MB max file
• Pro: ~$25/month/user, unlimited (paid annually)
• API: $0.009 per call after free 500/month, scales to enterprise

DuneTools:

• Free: unlimited compressions, ~50 MB max file
• No paid tier
• No API yet (on the roadmap)

For a freelancer or small business doing 100-500 image compressions/month, DuneTools’ free tier replaces TinyPNG’s $25/month subscription with zero compromise on output quality.

Migration: switching from TinyPNG to DuneTools

If you’ve been using TinyPNG’s free web tool, the workflow with DuneTools is essentially identical:

1. Open dunetools.com/compress-image/ instead of tinypng.com.
2. Drag your files in.
3. Hit the quality preset you want (or the size preset, e.g. Compress to 100 KB for ID photos).
4. Download the result.

No habit change required. The results are equivalent quality.

The bottom line

TinyPNG is excellent. It has a deserved reputation, a polished UX, and a plugin ecosystem that’ll matter to teams building integrations.

DuneTools is a credible alternative for the web-tool use case, same compression quality, better privacy guarantees, no quota walls, no sign-up, AVIF support included. For 80% of “I just need to compress these images” cases, it’s the simpler choice.

Try DuneTools Compress Image on your next batch, open both tools side by side, compare the output. The compression engine’s the same; pick by what surrounds it.