JPEG to PNG Converter
Convert JPEG images to PNG format free, in your browser — no upload, no sign-up.
Image Converter
Convert images between PNG, JPEG, WebP, AVIF, TIFF, GIF, and SVG formats
What is this?
Image Converter is a free, browser-based tool that converts image files between popular formats — PNG, JPEG, WebP, AVIF, TIFF, and GIF. SVG files can also be rasterised to any of those formats. No software to install and no sign-up required.
How to use
- Upload: Click the file picker and select your image (up to 3 MB).
- Choose formats: Select the source format and your desired output format, then adjust quality if needed.
- Convert & download: Click Run. A preview appears immediately and you can download the converted file.
FAQ
- What is the maximum file size?
- 3 MB. This is set by the Vercel free tier request body limit. For larger images, clone the repo and run locally — there is no size cap when self-hosted.
- Does conversion affect image quality?
- Lossless formats (PNG, TIFF) preserve every pixel. Lossy formats (JPEG, WebP, AVIF) use the quality slider — 80 is a good default that balances file size and visual fidelity.
- Why convert to WebP or AVIF?
- WebP is 25–35% smaller than JPEG/PNG at equivalent quality and is supported by all modern browsers. AVIF is 50% smaller still but takes longer to encode. Both are great for web delivery.
Why convert JPEG to PNG?
PNG preserves every pixel without quality loss, useful when you need a lossless archive copy of a JPEG image. PNG supports transparency, so converting from JPEG lets you add a transparent background to images that originally had a solid background.
- –Editing pipelines — PNG is the safest intermediate format when you need to re-edit an image without accumulating compression artefacts.
- –Batch conversion of JPEG files in a CI pipeline using the REST API: POST /api/image-converter.
- –Quick one-off conversion without installing software — everything runs in your browser.
About JPEG and PNG
JPEG is a lossy format optimised for photographs. It achieves small file sizes at the cost of some quality loss, which is usually imperceptible.
PNG is a lossless raster format that supports transparency. Ideal for graphics, logos, and screenshots where pixel-perfect quality matters.
Quality note: JPEG is lossy; PNG is lossless. Converting to PNG will not restore quality lost during the original JPEG compression, but no additional quality loss occurs in this conversion.
How to convert JPEG to PNG
- 1.Drag your JPEG file (or files) onto the converter above, or click to browse.
- 2.Confirm the output format is set to PNG. Adjust quality or size options if needed.
- 3.Click Convert. The conversion runs in your browser — your images are never uploaded.
- 4.Download the PNG file. For multiple files, a ZIP is downloaded automatically.
Frequently asked questions
- Is it safe to convert JPEG to PNG in the browser?
- Yes. The conversion runs entirely in your browser using the Canvas API — your images are not uploaded to any server. No data leaves your device.
- Does converting JPEG to PNG reduce quality?
- PNG is lossless, so no quality is lost in the conversion. The file may be larger than a lossy alternative.
- Can I convert multiple files at once?
- The web UI supports multiple files at once — drag and drop a batch of JPEG images and download them all as PNG. The REST API also accepts individual files for automated batch workflows.
- How do I convert JPEG to PNG without software?
- Use this tool — no installation required. Drag your JPEG file onto the converter, select PNG as the output format, and click Convert. The result downloads automatically.