Images never uploaded

Image format converter

Convert images on your device. No uploads, with optional compression.

Drop images and choose your output format

Up to 25 MiB / 16 MP each · 20 images per batch

Images never uploaded

This tool is for still images: animations use the first frame, TIFF the first page, HEIC the primary image and ICO one image. Conversion uses 8-bit SDR pixels without EXIF, ICC or HDR preservation. It is not for professional color archiving. Linear OpenEXR values are mapped to sRGB and clipped outside 0–1; exporting EXR does not restore HDR data.

Images never uploadedWorks offline after engines download

Supported image formats

PNG

Input → Output

JPEG

Input → Output

WebP

Input → Output

AVIF

Input → Output

JPEG XL

Input → Output

HEIC / HEIF

Input only

GIF

Input → Output

BMP

Input → Output

ICO

Input → Output

TIFF

Input → Output

TGA

Input → Output

OpenEXR

Input → Output

QOI

Input → Output

PNM (PPM)

Input → Output

Frequently asked questions

1Are my images uploaded?

No. Selection, decoding, compression and downloads happen in your browser. The server only serves the page and engine files; it never receives your images. No account is required. Google Analytics measures visits and tool usage, without image contents or file names.

2Can I convert images offline?

The first visit downloads the page and conversion components. Once the top badge shows offline ready, this tool works without a connection. Clearing browser storage requires another download. Images always stay on your device.

3Can I compress images while converting?

Yes. Open Advanced settings and enable compression. JPEG, PNG, WebP, AVIF and JXL reuse the compressor’s WASM engines. Other formats use their default encoding. With compression off, quality takes priority; files may become larger.

4Are animation, HDR and metadata preserved?

Choose an output format for the task

Steps

Choose images; the converter identifies their format from content.
Select an output format. Enable advanced compression only if you want smaller output.
Reopen downloaded results to check transparency, orientation, dimensions and size.

Before you start

HEIC/HEIF is input-only. Unsupported codecs inside a HEIF container may fail to decode.
Animated or multipage files produce the first frame, primary image or first page, not the full animation.
Output uses 8-bit SDR pixels without original EXIF/ICC metadata. JPEG, BMP and PNM composite transparency over white.
Up to 20 files per batch, 25 MiB and 16 million pixels per file. Conversion may increase size.

A reproducible example

For transparent WebP to PNG, select PNG and check the edges afterward. For HEIC to JPEG, check orientation and color and keep the original HEIC for metadata and dynamic range.

Download the transparent WebP sample (48 × 48)

ToolkitRack

More work, right in your browser

Free. No account. Your files stay on your device.

File type detector

Read file contents to identify real formats and disguised extensions.

Image compressor

Smaller images. Your privacy intact. Five professional engines, running on your device.