Best Free Image Converters in 2026 — I Tested 5 Tools With 40 Images

CloudConvert (Lunaweb GmbH, Munich) is a file conversion platform that supports 200+ formats — not just images, but documents, audio, video, ebooks, and more. Upload an image, select the target format, adjust quality/DPI settings, and the server returns the converted file. The interface is clean and developer-oriented, with a well-documented API for automation. Files are processed on servers in Frankfurt, Germany.

Conversion quality was excellent across all 40 test images. PNG to JPG conversions preserved color accuracy with minimal artifacts. WebP output was well-optimized — averaging 35% smaller than equivalent JPG at comparable visual quality. TIFF to PNG conversions kept full resolution and color depth intact. The quality slider gives fine-grained control over output size vs quality tradeoff.

Free users get 25 conversions per day — reasonable for light use but limiting for batch workflows. Upload times added 5-15 seconds depending on file size and batch count. The API is the standout feature: webhook callbacks, S3/Azure integration, and conversion chains make it ideal for developer pipelines.

Convertio (Softo Ltd.) is a general-purpose file converter supporting 200+ formats. Upload an image, pick the output format from a dropdown, and download the converted result. The interface is straightforward — drop a file, choose the target, click convert. All processing happens on their servers. Convertio also supports Google Drive and Dropbox imports for cloud-based workflows.

Conversion quality was generally good for standard format pairs. PNG to JPG results were clean with minimal artifacts. WebP output was well-optimized. However, TIFF to PNG conversions occasionally showed subtle color shifts on images with embedded ICC profiles — 3 of our 40 test images had noticeable differences in shadow detail.

The free tier is restrictive: 10 files per day with a 100MB cumulative limit. A batch of 15 product photos requires a paid plan. At $10/month, it's more expensive than CloudConvert for the same basic functionality. The Google Drive integration is convenient for users already in that ecosystem.

iLoveIMG (iLovePDF S.L., Barcelona) — from the same team behind ILovePDF — offers a focused set of image tools. The converter supports JPG, PNG, GIF, TIF, and a few RAW camera formats. Upload images, select the output format, and download converted results. The interface is clean and familiar if you've used ILovePDF. All processing is server-side in Barcelona.

Conversion quality was acceptable for standard JPG/PNG workflows. PNG to JPG results were clean. However, there's no quality slider — you get whatever default compression iLoveIMG applies, which averaged 75-80 quality for JPG output. This meant slightly larger files than competitors that let you dial quality down to 60-70 for web optimization.

WebP output is not supported on the free tier. Format selection is limited compared to CloudConvert or Convertio. Free users face batch limits and rate throttling similar to ILovePDF. At $4/month, it's the cheapest paid option, but you're paying for fewer features.

Photopea (Ivan Kutskir, Czech Republic) is a full-featured online image editor that rivals Adobe Photoshop in functionality. It opens PSD, XCF, Sketch, AI, and dozens of other formats directly in the browser. For conversion, you open a file and use File → Export As to save in your target format with full control over quality, color space, and dimensions. Everything runs locally in your browser — no uploads.

Conversion quality was excellent — the best per-image control in our test. The Export As dialog lets you set quality (0-100), toggle interlacing, choose color space, resize, and preview the output with file size estimate before saving. For photographers and designers who need precise control over every export, Photopea offers the strongest control.

The catch: it's not a converter, it's an editor. There's no batch conversion. Converting 40 images means opening each one, clicking Export As, adjusting settings, and saving. For our test of 40 images, Photopea took roughly 20 minutes of manual work vs seconds on every other tool. It's the right choice when you need to edit and convert, but overkill when you just need format conversion.