FAQ

Which tool do I need?

Find the line that sounds like your problem.

The file is the wrong type

Use a converter to save it in another format. There are also tools for going between GIF and video, and for turning an SVG into a PNG or JPG. Audio ConverterImage ConverterVideo ConverterGIF To VideoVideo To GIFSVG To Raster

The file is too big to send or upload

Use an optimizer. Each one has a setting that trades some quality for a smaller file, so you decide how far to go. Image OptimizerGIF OptimizerVideo Optimizer

The width and height are wrong

Use a resizer and type in the size you need, in pixels. Image ResizerGIF ResizerResize SVGsVideo Resizer

I only want part of a recording, or several in one file

Audio Cutter keeps one section and drops the rest. Audio Joiner does the opposite and puts files end to end. Audio CutterAudio Joiner

The color needs to change

There is a color tool for pictures, one for SVG shapes, and one for video. Image Color ChangerRecolor SVGsVideo Color Changer

I have a logo as a picture and need a vector

Image To SVG traces logos and line art into a one-color SVG that stays sharp at any size. Image To SVG

Common questions

Does it cost anything?

No. The tools are free to use.

Are my files uploaded anywhere?

No. The tools read the file from your device and do the work in the browser tab. The only thing some of them download is the FFmpeg engine, which is program code and not your data. It comes from the jsDelivr CDN, or from this site if the CDN cannot be reached.

Do I need an account?

No. Every tool on the site works without signing in.

Is there a file size limit?

There is no fixed limit. The file does have to fit in the memory your browser can use, so a very large video may fail on a phone or an older computer and still work fine on a newer one.

What happens to my file when I am done?

It stays in the memory of the tab until you select Clear or close the tab, and then it is gone. Your original file is never changed. You always save the result as a new file.

Why is the first run of some tools slower?

Tools that use FFmpeg have to download its engine the first time you use them. After it has loaded, the time a job takes depends on the size of the file and the speed of your device.

Who makes this site?

I do. I'm Cody Tolene, a software engineer in Wisconsin, and I build and run Lambda Guru on my own. If a tool breaks, or there is one you wish existed, the About page has more about me and how to get in touch.