Best Free TinyPNG Alternative in 2026 - Image Compression Compared

If you work with images for a website, social media, or any digital project, you have almost certainly used TinyPNG. It has been a staple of image compression for over a decade, and for good reason - it produces excellent quality at small file sizes.

But TinyPNG's free tier has real limitations. 20 images per month. 5 MB per file. PNG and JPEG only. If you hit any of those walls, you are either paying $25/year for TinyPNG Pro or searching for an alternative.

This post compares TinyPNG with onzlabs image compressor across the factors that matter most: compression quality, format support, batch processing, privacy, and cost.

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TinyPNG Free Tier Limitations

• 20 compressions per month - That is fewer than one per day
• 5 MB maximum file size - High-resolution photos and design assets often exceed this
• PNG and JPEG only - No WebP, AVIF, or other modern formats
• No batch download - Free users download files one at a time
• API limited to 500 images/month on the free key
• Files processed on remote servers - Uploaded to TinyPNG infrastructure

For a blogger publishing one post per week with a few images, 20 compressions might be enough. For a developer optimizing an entire site, a designer exporting assets, or a marketer preparing social media graphics, it runs out fast.

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TinyPNG vs onzlabs Image Compressor: Side by Side

| Feature | TinyPNG (Free) | onzlabs Image Compressor | |---|---|---| | Monthly limit | 20 images | Unlimited | | File size limit | 5 MB | No limit | | Supported formats | PNG, JPEG | PNG, JPEG, WebP, GIF, BMP, TIFF | | Batch processing | Up to 20 files (counts toward limit) | Unlimited batch | | Compression quality | Excellent (lossy smart compression) | High quality with adjustable levels | | Output format options | Same as input | Convert between formats | | Account required | No (but limited without Pro) | Never | | Ads | Minimal | Zero | | File privacy | Processed on TinyPNG servers | Deleted immediately after download | | Price | Free (20/mo) / $25/year Pro | 100% Free | | API | Yes (500 free/month) | No |

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Compression Quality

This is the area where TinyPNG built its reputation. Its smart lossy compression algorithm produces excellent results, particularly for PNG files. Color palettes are reduced intelligently, and the visual difference is nearly imperceptible in most cases.

onzlabs image compressor also produces high-quality compressed output. For typical web use - blog images, product photos, social media graphics - both tools deliver results that look great at significantly reduced file sizes. The practical difference in output quality for most users is minimal.

Where TinyPNG has an edge: Its PNG compression algorithm is exceptionally well-tuned. If you work exclusively with PNG files and quality is your absolute top priority, TinyPNG's algorithm is hard to beat.

Where onzlabs has an edge: Broader format support and adjustable compression levels give you more control. You can choose how aggressively to compress based on your specific needs.

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Format Support

TinyPNG supports PNG and JPEG. That was sufficient in 2015, but the web has moved on. Modern formats like WebP deliver better compression at equal quality, and most browsers now support it natively.

onzlabs Image Compressor handles:

• PNG - Lossless and lossy compression
• JPEG - Quality-adjustable compression
• WebP - Modern format with superior compression
• GIF - Animated and static GIF compression
• BMP - Bitmap compression
• TIFF - High-quality format compression

If you need to compress a WebP file or convert a PNG to WebP for better web performance, onzlabs handles it directly. With TinyPNG, you would need a separate tool for format conversion.

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Beyond Compression: The Full Image Toolkit

TinyPNG does one thing: compress images. onzlabs offers a complete image toolkit:

Image Resize

Image Resizer lets you resize images to exact dimensions or percentages. Useful for creating thumbnails, social media sizes, or standardizing image dimensions across a project. No need for a separate tool.

Image Format Conversion

Image Converter converts between PNG, JPEG, WebP, BMP, TIFF, and other formats. Convert a batch of PNGs to WebP for better web performance in one step.

Image Watermarking

Image Watermarker adds text or image watermarks to protect your work. Adjust position, opacity, and size without opening Photoshop.

Background Removal

Background Remover uses AI to remove backgrounds from photos. Useful for product photography, profile pictures, and design work.

Image to PDF

Image to PDF combines multiple images into a single PDF document. Useful for creating portfolios, reports, or printable collections.

Base64 Conversion

Image to Base64 Converter and Base64 to Image Converter handle encoding and decoding for embedding images in HTML, CSS, or JSON.

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Privacy Comparison

| Privacy Factor | TinyPNG | onzlabs | |---|---|---| | Upload destination | TinyPNG servers (Voormedia B.V.) | onzlabs servers | | File retention | "A few hours" per their policy | Deleted immediately after download | | Account data | Email if using Pro | No account, no data | | Analytics | Standard web analytics | Minimal analytics, no file tracking |

TinyPNG's privacy practices are reasonable - files are deleted after processing, and the company is transparent about its practices. But onzlabs takes it further with immediate deletion and zero-storage architecture. If you are compressing confidential documents or proprietary images, the difference matters.

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Pricing

| Plan | TinyPNG | onzlabs | |---|---|---| | Free | 20 images/month, 5 MB limit | Unlimited, no limits | | Pro | $25/year (unlimited web, 10 MB limit) | N/A - everything is free | | API | 500 free/month, then $0.009/image | No API currently |

TinyPNG Pro at $25/year is not expensive. But free is free. If you are compressing images for a personal blog, a small business site, or a side project, paying $25/year for something you can get for free does not make financial sense.

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Who Should Stick with TinyPNG?

TinyPNG remains a good choice if:

• You compress fewer than 20 images per month and never exceed 5 MB
• You rely on the TinyPNG API in your build pipeline or CI/CD workflow
• You use the WordPress plugin for automatic compression on upload
• You need the specific TinyPNG algorithm for PNG optimization

The WordPress plugin and API integration are TinyPNG's strongest differentiators. If your workflow depends on automated compression through these channels, TinyPNG serves a purpose that onzlabs does not currently replicate.

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Who Should Switch to onzlabs?

onzlabs is the better choice if:

• You compress more than 20 images per month
• You work with files larger than 5 MB
• You need WebP, GIF, BMP, or TIFF compression
• You want image resizing, conversion, and watermarking in the same place
• You prefer not to create accounts or share personal information
• You want zero ads and zero upsells
• Privacy and immediate file deletion matter to you

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The Verdict

TinyPNG is an excellent tool with a well-earned reputation for quality PNG compression. Its API and WordPress integrations make it valuable for automated workflows.

onzlabs is the better general-purpose choice for manual image compression. No monthly limits, no file size caps, broader format support, and a complete image toolkit that goes well beyond compression alone.

For most users who compress images manually through a browser, onzlabs delivers everything TinyPNG does and more - at no cost.

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Try It Now

Start compressing images without limits:

• Image Compressor - Compress PNG, JPEG, WebP, and more
• Image Resizer - Resize to exact dimensions
• Image Converter - Convert between formats
• Background Remover - AI-powered background removal
• Image Watermarker - Protect your images

All free. No account. No monthly limits.

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FAQ

Q: Is onzlabs image compression as good as TinyPNG? A: For typical web use, the quality difference is negligible. TinyPNG has a slight edge on PNG-specific optimization, but onzlabs supports more formats and offers adjustable compression levels.

Q: Can onzlabs replace TinyPNG in my build pipeline? A: Not currently. onzlabs does not offer an API, so if you need automated compression in a CI/CD pipeline, TinyPNG's API is still the right tool for that job.

Q: Does onzlabs support WebP compression? A: Yes. Unlike TinyPNG, onzlabs compresses WebP files directly and can also convert other formats to WebP.

Q: How many images can I compress on onzlabs? A: There is no limit. Compress as many images as you need, as often as you need, with no monthly cap.

Q: Is my data safe? A: Yes. Files are processed in memory and deleted immediately after download. No images are stored on onzlabs servers.

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Last Updated: March 2026

Made the switch from TinyPNG? We would love to hear how it went.