Shrink thousands of images by 50–80% — no visible quality loss
Compress thousands of images without visible quality loss.
Download the free trial: every file converts, keep 10 clean
Convert the whole folder now. Keep 10 results clean, free. $129 once removes the watermark from the rest. No card, no account, no upload. Windows 10 and 11.
- Add your imagesDrag & drop files or entire folders
- Set compression levelChoose quality vs. file size balance — preview before converting
- ConvertAll outputs ready in minutes
Reduce JPEG, PNG, and WebP file sizes by 50–80%. Perfect for websites, email campaigns, and storage optimization.
The same photo, five outputs
DSC_0001.NEF · 3900×2613- PNG.png1.9 s16.1 MB
- AVIF.avif2.2 s2.02 MB
- JPG.jpg1.7 s1.69 MB
- WebP.webp1.7 s1.32 MB
- JPEG XL.jxl1.7 s1.12 MB
Compression Results by Quality Level
| JPEG Quality | Size Reduction | Visual Difference | Best For |
|---|---|---|---|
| 95% | 20–30% smaller | Imperceptible | Print, archival |
| 92% | 40–50% smaller | Nearly invisible | E-commerce, portfolio |
| 85% | 60–70% smaller | Slight on zoom | Websites, blogs |
| 75% | 70–80% smaller | Noticeable on zoom | Thumbnails, email |
Supported Formats
JPEG Lossy
Adjustable quality from 1–100%. Best for photos.
PNG Lossless
Reduce file size without any quality loss. Best for graphics.
WebP
Modern format with superior compression. Lossy and lossless modes.
PNG compression level
PNG is lossless — you keep every pixel. Contenta lets you pick the compression effort so files shrink as much as the format allows.
Lossless by design
PNG never throws away image data. Higher compression means smaller files with identical pixels.
Choose the effort
Set the PNG compression level from 0 to 9 — maximum effort for the smallest web-ready PNGs.
Batch every PNG
Apply your chosen level to a whole folder of PNGs in one pass, on your desktop.
Before & After
Before Contenta
5 MB product photos. Slow page loads. Emails bouncing from size limits. Online compressors with file limits and privacy concerns.
After Contenta
Drop 10,000 images, set your quality target, get optimized files in minutes. No upload to third-party servers. Your files stay on your computer.
Start Converting Photos Today
Choose the plan that works for you. All plans include every feature.
No subscription trap. Contenta is a one-time purchase — less than 2 months of Lightroom, and it's yours forever.
Frequently Asked Questions
Contenta reads 100+ input formats, including JPEG, PNG, TIFF, WebP, HEIC, AVIF, BMP, GIF, PDF and 30+ camera RAW formats (CR2, NEF, ARW, DNG, RAF, and more), and writes 28 output formats.
There is no limit. Contenta uses multi-core processing to convert thousands of images in minutes. Users regularly process 10,000+ photos in a single batch.
Yes. Contenta supports 30+ RAW formats from Canon, Nikon, Sony, Fuji, Panasonic, Olympus, and more. Full white balance, denoising, and color adjustment controls are built in.
Every feature, every file and no time limit. Each batch converts in full; results carry a small watermark until you pick up to 10 of them to keep clean. Those picks count once per PC, not per batch, and a batch of 500 costs none until you choose. A license ($129 once) removes the watermark from everything you convert.
No. Contenta Converter is a one-time purchase. You pay once and own it forever, including all future updates. No monthly or yearly fees.
What Our Users Say
“I have been using Contenta Converter for years and it has saved me countless hours of work. Highly recommended!”
“Simple, fast, and does exactly what it promises. The batch processing is incredibly efficient.”
“Best image converter I have found. The RAW support and metadata handling are top-notch.”
Published by ContentaSoft, Umea, Sweden, developer of Contenta Converter PREMIUM.
Contenta Converter PREMIUM is a desktop application for Windows that batch converts, resizes, renames, watermarks, and processes images in 100+ formats including JPEG, PNG, WebP, HEIC, TIFF, RAW, and PDF.
This software contains no adware, spyware, toolbars, or bundled third-party programs. The installer installs only Contenta Converter PREMIUM.
Conversion, resizing, watermarking and metadata editing run on your computer. The optional AI features (background removal, photo restoration, colorize) send the images you process with them to Google Gemini using your own API key. The software does not collect personal data.
Free trial with every feature and no time limit: every file converts, up to 10 results you pick stay clean and the rest carry a watermark. Lifetime license: $129 (one-time payment, no subscription).
How to Uninstall
Open Windows Settings > Apps > Installed apps, find "Contenta Converter PREMIUM" in the list, and click Uninstall. You can also run the uninstaller from the installation folder or use Control Panel > Programs and Features.
Download size: ~2 MB (web installer). Additional components are downloaded during installation (~300 MB total).