Convert HEIC / HEIF to WebP online

Convert HEIC / HEIF to WebP online in batches. Files stay in your browser and are never uploaded or stored on a server.

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Up to 20 files · 40 MB each · 100 MB per batch

Choose HEIC / HEIF files and convert them to WebP together in one private browser session.

How to convert HEIC / HEIF to WebP

Select one or more HEIC / HEIF files, start the batch, then download each WebP result or all completed files together.

This HEIC / HEIF-to-WebP conversion decodes each source and encodes a new output in the selected format.

Process up to 20 files per batch, with 40 MB per file and 100 MB in total.

The conversion runs locally in your browser. NDNCI never receives, stores, or sends your files to a third party.

Audio Converter

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Base32 Encoder/Decoder

Encode UTF-8 text to Base32 or decode Base32 values locally.

Base64 Encoder/Decoder

Encode or decode Base64 strings.

Markdown/HTML Converter

Convert between Markdown and HTML in both directions.

Spreadsheet Converter

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URL Encoder/Decoder

Encode or decode URLs quickly.

Video Converter

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Image Upscaler

Upscale images 2× locally, with optional AI acceleration and browser fallbacks.

Video Upscaler

Upscale videos 2× locally, using AI and WebGPU when available with a browser fallback.

3D Model Viewer

Open 3D models locally, inspect geometry, materials and textures, then download the original files.