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Shapes

Convert images to JPG, PNG, WebP, AVIFlocally

100% local
Zero storage
Hébergé en France
Free

See how it works

How does the FileVert image converter work?

The FileVert image converter allows you to change the format of your images (JPEG, PNG, WebP, AVIF) directly in your browser. No files are sent to a server.

What "in your browser" means

  • No files are sent to a server
  • No remote storage
  • No external access to your data
  • Works even offline
After the tool

Send the result: standard mode or Explore mode

When your file is ready on your device, send it with FileVert Transfer from the built-in send action. Choose whether the recipient downloads immediately (standard) or previews first in the browser without a silent local copy (Explore mode).

Standard mode

Secure link: the recipient downloads the file in the usual way. Best for final deliverables, archives and heavy attachments.

Guide: send very large files

Explore mode

Share images to flip through in a grid or fullscreen before any download decision.

Guide: photo gallery in the browser

Two modes depending on your usage

Convert image by image or transform entire folders from one format to another in one click.

Classic mode — Image by image

Ideal for precisely choosing the output format (JPEG, PNG, WebP, AVIF) of each image.

Folder mode — FileVert specific

Import a complete folder: you get exactly the same structure, fully converted, subfolders included.

Automatic conversion to JPEG, PNG, WebP or AVIF
Structure strictly preserved

Automatic batch conversion

Automatic conversion to JPEG, PNG, WebP or AVIF

Individual conversion

Precise choice of output format (JPEG, PNG, WebP, AVIF)

Transform entire folders

Convert an entire folder to a homogeneous format

Resize images during conversion

The FileVert image converter also allows you to resize your images during format conversion. You can change the format AND adjust the dimensions (width, height) of your images in a single operation, directly in your browser, without upload.

Combined conversion and resizing

Transform your images by changing both their format and dimensions. Ideal for preparing your images for the web: convert to WebP or AVIF while reducing size for faster loading.

Format change and resizing in a single operation

Conversion to modern web formats (WebP, AVIF) with optimized dimensions

Batch processing: convert and resize entire folders

Optimal preparation for web publishing or archiving

PRIVACY

Total privacy & digital sobriety

100% in your browser

No conversion server

No logs

No tracking

No advertising

No limits

No account required

No data stored

All calculations are performed locally on your device, without transfer.

Direct integration with FileVert

Once your images are transformed, transfer them immediately, without workflow interruption.

Start a transfer

Frequently Asked Questions

Everything you need to know about the FileVert image converter

All conversions are performed directly in your browser, on your device. No files are transferred to a server.
No. FileVert never modifies your files automatically. The converter is an optional tool you use before transfer.
No. No limits are imposed. You can convert as many files as needed.
Yes. You can import a complete folder with its entire structure, and the converter preserves exactly the same structure.
Yes. Batch conversion can be applied automatically to all images in a folder in a single operation.
No. There is neither advertising nor tracking.
Yes, the FileVert converter allows you to convert JPEG images to WebP or AVIF in batch. You can import multiple images or an entire folder and convert them all to your chosen format (WebP, AVIF, PNG, JPEG) in a single operation, directly in your browser, without upload.
Import your PNG folder directly into the FileVert converter. All images will be converted to JPG while preserving the folder structure. No files are sent to a server: conversion is done entirely in your browser, without upload or cloud storage.
Yes, the FileVert converter uses high-quality conversion algorithms that preserve visual quality when changing format. Conversions to WebP and AVIF in particular offer excellent results with reduced file size, ideal for the modern web.

Image format conversion tool (JPG, PNG, WebP, AVIF), 100% local in browser, no signup, to prepare your files before sending, web publishing or archiving.