SideKit
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BROWSER-BASED TOOLKIT

Before reaching for the heavy app.

Quick image, video, GIF and PDF edits — done right in your browser.
No upload, no signup needed.

See the tools

WHAT IT DOES

Things like these.

01

Make a GIF from a video

GIF/APNG Maker →

Input MP4
GIF output example
Output GIF
02

Turn a GIF into MP4

Video Converter →

GIF input
Input GIF
Output MP4
03

Resize an image

Image Resizer →

Original
Input 1280 × 720
Resized
Output 640 × 360
Thumbnail
Output 320 × 180
04

Shrink a file

Compressor →

Before
Before 1.1 MB
After
After 128 KB
01 / TOOLS

What's in the kit

02 / PRINCIPLES

What we care about

Processing
Everything happens in your browser. Files never leave your device.
Pricing
Free for everything, including commercial use.
Signup
No account, no email. Open the page and start.
Ads
No ads, no tracking.
03 / FAQ

Frequently asked

Is it really all free?

Yes — every tool and feature is free. There's no hidden plan or feature gate, and commercial use is fine.

Where are my files processed?

Only inside your browser. Nothing is sent to SideKit's servers or any third-party service. Output files are saved directly to your device.

Do I need to sign up or log in?

No. Open the page and you can start right away. We don't ask for an email or account.

Which browsers and OS are supported?

The latest versions of Chrome, Edge, Firefox, and Safari. Works on Windows, macOS, Linux, iPadOS, and Android — anywhere a modern browser runs.

Can it handle large files?

It uses native browser APIs (WebCodecs, Canvas, etc.) directly, which is fast. That said, browser memory is limited, so videos over 1–2 GB or very high-resolution images may slow down. Trimming long videos before loading helps stability.

Can I request new features?

Sure — feature requests are welcome. Common ones get added first. Bug reports are equally welcome.

Who runs this site?

It's a small project run by a single developer. The site is a fully static page (no backend), so you can verify how it works using your browser's dev tools.

SideKit · Quick creative tools for your browser

No upload · No signup · Free

Made with WebCodecs · Canvas API · mp4-muxer · libheif · SVGO