LightBox

Free WebP, AVIF & WebM converter for video and images

Turn MP4, MOV, GIF, JPG or PNG into animated WebP, AVIF, WebM or a lighter GIF, in seconds.

Drop a video or image
Choose file

MP4, MOV, WebM, GIF, JPG, PNG, WebP, HEIC, ZIP

Up to 100 MB free · 1 GB with Pro

HEIC, animated WebP input, PNG sequences and frame sequence export require Pro.

No signupFree, no watermarkDeleted after about an hour

How it works

  1. Add a file

    Drop in a video or image — or click to browse.

  2. Pick a format

    Choose an output format. Recommended settings are ready.

  3. Download

    Get a far smaller file in seconds. Done.

Why use LightBox

The modern replacement for GIF

Animated WebP looks sharper and weighs far less than a GIF, so your loops load fast and stay crisp. Drop in a video and get a web-ready animation back in seconds.

Free, no signup, no watermark

Convert common video and image formats free, without an account or watermark. Pro adds specialist formats and tools for bigger or repeated jobs.

Real control over the output

Tune quality, fps, trim, crop, resize, loop count and audio, or use the frame-picker to grab a single still. Get exactly the file you need, not a one-size-fits-all export.

Your files stay private

Free conversions are processed on our server and auto-deleted after about an hour. Downloads stay on your device. Choose lifetime Pro for a permanent hosted library.

Free forever. Pro when you need more.

Convert common formats free. Lifetime Pro adds more capacity and permanent hosting, with no subscription.

LimitFreeLifetime Pro
File size100 MB1 GB
Per day4 filesUnlimited
Files kept1 hourForever
Batch1 file20 files
QueueStandardPriority
was $54now $27

50% off at launch · Paid once, yours for life. No recurring payments.

14-day money-back guarantee · secure checkout by Paddle

Just need it today? A 24-hour pass is $5.

See everything Pro adds

Less repeat work.
More finished files.

Try a small example of the tools you get with Pro. No upload or account needed.

A whole folder, done

Choose your settings once. Convert up to 20 files together, then reuse your preset next time.

A folder, one conversionExample only

Website images

WebP · 80 quality · 1280px wide

Product photo.pngReady
Collection cover.jpgReady
Campaign image.pngReady

Use the same settings for up to 20 files at a time. No files are uploaded in this example.

Lifetime Pro keeps your library permanently. Pass files and links are temporary.

Frequently asked questions

WebP is a modern image format from Google that delivers smaller files at higher quality than JPG, PNG or GIF. It supports still images, animation and transparency, which makes it ideal for fast-loading websites.

Yes. Common video and image conversions are free, with no signup or watermark. Pro adds larger files, batches, HEIC and animated WebP input, MP4 export, lossless mode and other specialist tools. The optional Pro upgrade supports the free tier.

Upload your MP4 (or MOV or WebM) video, choose animated or still WebP as the output, adjust quality, fps or trim if you like, and convert. In seconds you get a web-ready WebP to download — with no software to install.

Animated WebP is the modern upgrade to the GIF. It produces far smaller files at noticeably better quality, with smoother color and transparency. If you still export GIFs, animated WebP gives you the same looping animation that loads faster and looks sharper.

Yes. Your files are processed on our server and automatically deleted within about an hour — we don't keep or share them, and nothing is ever watermarked. Pro accounts keep their files in a permanent private library.

No. The converter is anonymous by default — your job is reached through a private link, with no login required. A free account is optional; a one-time Pro upgrade adds a permanent library, reusable presets, batch conversion, bigger uploads, and more.

You can upload video (MP4, MOV, WebM), GIFs, or images (JPG, PNG) and convert them to animated WebP, still WebP, WebM video, AVIF, an optimized GIF, or a frame sequence. Controls include quality, fps, trim, crop, resize, loop count, audio, and a frame-picker for stills.

Yes. Upload a JPG or PNG and convert it to a still WebP to shrink the file size while keeping it crisp — perfect for faster-loading pages. You can resize or crop before exporting.

Free is the full converter — every format including image-to-AVIF, all the controls, no watermark, no signup — with files up to 100 MB, about 4 conversions a day, and results auto-deleted within the hour. Pro is a one-time upgrade that adds much bigger uploads (up to 1 GB), unlimited conversions, batch processing, saved presets, a permanent library, priority processing, AVIF from video frames, a lossless/max-quality mode, and Keep & Share hosted links — for people who convert a lot and want to keep and share their files.

Yes. Pro comes with a 14-day money-back guarantee — if it's not for you, email us within 14 days of your purchase for a full refund, no questions asked. Pro is a one-time payment (no subscription), processed securely by Paddle.

⏰ Limited Time Special Offer - 50% OFF🔥