echloe vs TinyPNG: Best Batch Image Compressor 2026

TL;DR

echloe processes images entirely in your browser with no file uploads, supports modern AVIF format, and handles unlimited batch sizes with its Pro plan. TinyPNG is a well-known cloud compressor limited to 20 files at a time that requires uploading your images to remote servers. Choose echloe for privacy-sensitive bulk work; choose TinyPNG for quick one-off PNG/JPEG compressions when you need a developer API or CMS plugin integration.

Key Takeaways

• echloe never uploads your files — all processing happens locally via WebAssembly, making it suitable for confidential or sensitive images
• TinyPNG limits free users to 20 images per batch and 5 MB per file; echloe Pro has no batch size limit
• echloe supports AVIF output, which delivers 30-50% smaller files than WebP at equivalent quality; TinyPNG does not support AVIF
• echloe provides a real-time quality preview slider so you can see compression artifacts before committing; TinyPNG applies a fixed algorithm with no user control over quality
• TinyPNG has been trusted since 2014 and integrates with WordPress, Shopify, and various CDNs through plugins and a well-documented developer API
• echloe works offline once loaded; TinyPNG requires an active internet connection for every single compression operation

What is TinyPNG?

TinyPNG is a cloud-based image compression service launched in 2014 by Voormedia, a Dutch software company. It uses smart lossy compression techniques to reduce PNG and JPEG file sizes by selectively reducing the number of colors in the image while maintaining visual quality that is nearly indistinguishable from the original to the human eye. The name "TinyPNG" originally referred only to PNG compression, but the service now handles JPEG and WebP as well.

When you use TinyPNG, your files are uploaded to their servers where the compression algorithm runs. The compressed files are then made available for download. This round-trip means processing speed depends on your internet connection bandwidth and the current load on TinyPNG's servers. For a single small image, this is usually fast. For large batches of high-resolution photos, the upload time alone can take several minutes.

TinyPNG offers multiple integration points beyond its web interface. The developer API provides programmatic access with 500 free compressions per month. Official plugins exist for WordPress (which compresses images automatically on upload), Shopify, Magento, and other CMS platforms. Third-party integrations cover Zapier, Cloudflare, and various build tools. This ecosystem of integrations is TinyPNG's strongest differentiator — it fits into existing workflows without requiring users to change their process.

The service supports PNG, JPEG, and WebP as both input and output formats. It does not support AVIF, JPEG XL, or other next-generation formats. Animated PNGs (APNG) and animated WebP files are also not supported.

What is echloe?

echloe is a browser-based batch image processing tool that runs entirely on your device using WebAssembly technology. The codecs that power echloe are compiled from the same open-source libraries used by Chrome and Firefox to decode images — specifically jSquash implementations of libjpeg, libwebp, libavif, and oxipng. This means the compression quality matches what browsers themselves produce.

The key architectural decision behind echloe is that no image data ever leaves your browser. When you drop files into echloe, they are read into browser memory, processed by WebAssembly code running in Web Workers (background threads), and the output is generated locally. The only network requests echloe makes are for authentication and license validation — never for image data. This makes echloe suitable for environments where data cannot leave the device: medical imaging, legal document processing, unreleased product photography, and any work under NDA.

echloe supports four output formats: AVIF (the most modern, offering 30-50% size reduction over WebP), WebP (widely supported, 25-35% smaller than JPEG), JPEG (universal compatibility), and PNG (lossless). The tool provides 15 platform-specific presets that automatically configure format, quality level, and dimensions for common publishing targets including Instagram feed, Instagram stories, Twitter/X posts, LinkedIn banners, Shopify product images, Facebook ads, and YouTube thumbnails.

The quality preview feature lets users drag a slider and see in real time how different quality settings affect both visual appearance and file size. This eliminates the guesswork of choosing a quality value — you can see exactly what 75% quality looks like versus 85% and decide based on visual inspection rather than arbitrary numbers.

How does echloe compare to TinyPNG?

Detailed Feature Comparison

Privacy and Data Security

The most significant difference between these tools is where your images are processed. TinyPNG requires uploading every image to their servers in Amsterdam. Their privacy policy states that files are processed and then deleted, but during the upload-process-download cycle, your images exist on third-party infrastructure. For many users this is perfectly fine — compressing stock photos or already-public marketing materials carries no privacy risk.

However, for professionals handling sensitive content, this creates compliance issues. Healthcare organizations subject to HIPAA cannot upload patient images to third-party servers without a Business Associate Agreement. Lawyers handling privileged documents face similar restrictions. Photographers with exclusive contracts may violate terms by uploading unreleased work to any third party. echloe eliminates this entire category of concern because images never leave the browser.

Format Support and Quality

TinyPNG's compression algorithm is proprietary and applies a fixed optimization strategy. You cannot adjust quality, choose effort levels, or control how aggressive the compression is. The algorithm is generally excellent — TinyPNG has spent a decade refining it — but you have no control if the automatic result is too aggressive or not aggressive enough for your needs.

echloe exposes a quality slider that directly controls the encoder quality parameter. The real-time preview means you can visually verify the result before downloading. Additionally, echloe supports AVIF output, which represents the current state of the art in image compression. AVIF typically achieves 30-50% smaller files than WebP at equivalent visual quality, making it the optimal choice for websites targeting modern browsers (Chrome, Firefox, Safari 16+, and Edge all support AVIF as of 2025).

Batch Workflow and Speed

TinyPNG's web interface accepts up to 20 images at a time. You drag them in, wait for upload and processing, then download individually or as a ZIP. If you have 200 product photos, that means 10 separate sessions of drag, wait, download. The API removes this limitation but requires developer knowledge and costs money beyond 500 compressions per month.

echloe's entire design is built around batch workflows. Drop in hundreds of images, select your format and quality (or pick a platform preset), preview any image in the batch to spot-check quality, then download everything as a single ZIP file. The processing happens in parallel using Web Workers, utilizing multiple CPU cores. A modern laptop can process 100 images in under a minute without any network dependency.

Speed is another area where local processing shines. With TinyPNG, a batch of 20 images at 3 MB each means uploading 60 MB, waiting for server processing, and downloading the compressed results. On a typical home connection with 10 Mbps upload speed, the upload alone takes nearly a minute. echloe starts processing immediately with zero network overhead — the only bottleneck is your CPU, and modern processors handle image encoding extremely well.

When should you use TinyPNG vs echloe?

Choose TinyPNG when:

• You need a developer API to automate compression in your build pipeline, CI/CD workflow, or content management system
• You are compressing a small number of PNGs (under 20) and want the simplest possible interface with no decisions to make
• You use WordPress or Shopify and want plugin-based automatic compression that works silently on every upload
• You do not need AVIF output and are satisfied with TinyPNG's automatic quality decisions for PNG/JPEG/WebP
• You want a decade-proven service with extensive documentation, community support, and enterprise SLAs

Choose echloe when:

• You handle confidential, medical, legal, or client images that absolutely must not be uploaded to third-party servers under any circumstances
• You need to compress hundreds of images at once without hitting batch limits or making repeated upload cycles
• You want AVIF output for maximum file size reduction, targeting modern browsers that all support this format
• You want to preview quality before committing to see exactly how your images will look at different compression levels
• You work in environments with limited, slow, or no internet connectivity — echloe works completely offline
• You need platform-specific presets for social media or e-commerce that automatically set the right dimensions and format
• You want explicit control over the quality/size tradeoff rather than trusting an automatic algorithm

FAQ

Is echloe better than TinyPNG?

It depends on your workflow and priorities. echloe is the better choice for privacy-conscious users, large batch operations, anyone who needs AVIF format support, and users who want control over quality settings with visual preview. TinyPNG is the better choice if you need a developer API for automated pipelines, CMS plugins for WordPress or Shopify, or you prefer a well-established service with a decade of track record and enterprise support. Both produce excellent compression results — the difference is in workflow, privacy model, and format support rather than raw compression quality.

Is TinyPNG free?

TinyPNG offers a free tier with meaningful limitations: maximum 20 images per batch upload, 5 MB maximum file size per image, and PNG/JPEG/WebP output formats only. The TinyPNG Pro plan costs $39 per year and raises the file size limit to 75 MB while adding background removal features. The developer API offers 500 free compressions per month; beyond that threshold, pricing starts at $0.009 per image (roughly $9 per 1,000 images). echloe's free tier allows 10 images per day with full access to all output formats including AVIF, with no per-file size restriction.

Does TinyPNG upload my files?

Yes. TinyPNG requires uploading your images to their servers for processing — this is fundamental to how the service works, as the compression runs on their infrastructure. Their privacy policy states that files are stored temporarily and deleted after processing, but during the upload-process-download cycle your images transit across the internet and reside on TinyPNG's servers in Amsterdam. echloe takes the opposite approach: all processing happens locally in your browser using WebAssembly codecs, so your files never leave your device. No network request containing image data is ever made. This makes echloe the definitively safer choice for sensitive content including medical images, legal documents, client photos under NDA, or proprietary product designs.

Can I use TinyPNG offline?

No. TinyPNG is entirely cloud-based and requires an active internet connection for every compression. If your connection drops mid-batch, you must restart. echloe works completely offline once the page has loaded — all codecs are bundled as WebAssembly modules that run locally, making it reliable in low-connectivity environments like airplanes, remote locations, or restricted corporate networks.

Which produces smaller files — TinyPNG or echloe?

For PNG and JPEG output, both tools produce similarly sized results since the compression algorithms are mature and well-optimized. TinyPNG's proprietary algorithm is excellent for PNG specifically. However, echloe's AVIF output option produces files 30-50% smaller than anything TinyPNG can deliver, simply because AVIF is a fundamentally more efficient format. If your target audience uses modern browsers (all major browsers support AVIF since 2022), echloe with AVIF output will consistently deliver smaller files.