Batch Compress Hundreds of Images. All From Your Desktop.
TinyOpt is a free desktop app for batch image compression, powered by TinyPNG. Compress, watermark, convert, and rename hundreds of images at once — no browser upload queues, no file-size caps, no hidden costs. Just drop your folder and go.
Drop images or folders here
photo-1.jpg
photo-2.png
banner.webp
Why a Desktop Tool?
Online image compressors work — until you hit the 5MB limit. Or the 20-image batch cap. Or watch your browser struggle through 50 uploads. If you process more than a few dozen images each week, TinyOpt does it all locally managed — no browser bottlenecks, no waiting in queues.
Three Steps to Compress Images
Download → Drag → Compress — done in three steps
Download & Install
Grab the installer, double-click, done. No signup, no bloatware.
Drag & Drop Images
Drop images or folders — TinyOpt auto-detects formats and queues them up.
One-Click Compress
Hit Compress. Multi-threaded processing kicks in — come back to optimized files.
Core Features
Batch Compression
Compress PNG, JPEG, WebP, AVIF, and more in bulk. Typically 50-80% smaller files with virtually no visible quality loss.
Watermark Tool
Add text or image watermarks with drag-and-drop preview. Batch watermark 200 images in minutes — no Photoshop needed.
Format Conversion
9 output formats: JPEG, PNG, WebP, GIF, TIFF, BMP, AVIF, ICO, PDF. Need a favicon? A PDF? One click converts the entire batch.
Batch Rename
Rename hundreds of files using templates: index numbers, dates, custom prefixes. Stop renaming screenshots one by one.
Multi-Key Management
Add multiple TinyPNG API keys, auto-switch when quotas run out. Scale past the 500-image monthly limit.
Compression History
Every compression logged: original size, saved size, ratio. Useful for client billing or tracking savings.
Trusted by Designers & Developers
Frequently Asked Questions
Common questions about TinyOpt
Yes! The tool is completely free and open source. You only need a TinyPNG API Key (free tier: 500 images/month) to get started.
Input supports PNG, JPEG, WebP, AVIF, BMP, GIF, TIFF. Output supports JPEG, PNG, WebP, GIF, TIFF, BMP, AVIF, ICO, PDF — 9 formats total.
Images are sent to TinyPNG's official API for compression over encrypted connections. We do not store or forward your images — they are deleted after processing.
TinyPNG uses smart lossy compression that significantly reduces file size while remaining virtually indistinguishable to the human eye. You can also adjust compression parameters.
Visit tinypng.com/developers, register an account, and get your free API Key — 500 free compressions per month.
Absolutely! Drag in multiple images or entire folders — the tool supports multi-threaded batch compression for maximum efficiency.
Trusted by Users
Real reviews from designers and developers
"I process hundreds of design mockups daily. TinyOpt saves me at least 50% of my time, and the watermark feature is fantastic!"
"Batch compression + WebP conversion in one go. It's been a huge help for website performance optimization. Highly recommended!"
"Simple to use, great compression ratio — 3MB down to 200KB with excellent quality. And it's free! Couldn't ask for more."