Do files get uploaded to a server?

No. Conversions and recording tasks run locally in your browser on this device.

Which formats can I convert?

You can convert WebM to MP4, images to PDF, merge PDF files, and switch JPG PNG WebP image formats.

Is the tool free to use?

Yes. The app is free to use and does not require an account.

Free Converter - WebM, PDF, Image, Recorder and Diffchecker Tools

Converter

Make your file in 3 easy steps

WebM to MP4

Convert WebM, PDF, JPG, PNG, and WebP files directly in your browser with no upload required.

Step 1

Pick what you want

Tap one box below.

Step 2

Add your file

Drop the file here or tap Pick files.

Selected files

Turn one WebM video into an MP4 file.

Add a file and the app will show what the result will be.

0 files

No files selected yet.

Optional settings

Change quality or speed only if you need to

Open optional settings

Video quality

Picture size Smoothness

Remove sound from the result

If you are not sure, leave the recommended settings as they are.

Diffchecker

Check differences and merge edits

No comparison yet

Paste text or load files on both sides, compare changes, then merge line blocks left to right or right to left.

Ignore extra spaces Ignore letter case

Left side

Original

0 lines

Right side

Updated

0 lines

Add content to both sides to see line-by-line differences.

No differences to show yet.

Optional tools

More tools if you need them

Most people can ignore the sections below and just use the converter above.

Use the recorder

Record your screen or camera

What do you want to capture?

Recorded video

Leave optimization off for the fastest save. Turn it on if you want cleaner playback and seeking after recording.

Record audio?

Open recording settings

Save as Share prompt preference Video quality Size Smoothness

If MP4 is not available directly, the app will finish the MP4 after recording stops.

Video player

Status Ready

Elapsed 00:00

Your recording stays on this device and will appear in Latest videos and the downloads area.

No saved recording selected yet.

Finish a recording to preview it here and keep it in Latest videos on this device.

Saved recordings on this device

Each finished recording stays in this browser so you can replay, download, or remove it later.

No saved recordings yet.

See recent activity

Recent activity

Past conversions

No conversions have been recorded yet.

Privacy, device info, and workspace lock

Device check

Private mode

Name shown in history

Set PIN Enter PIN

No PIN is set right now.

Usage summary

Successful jobs 0

Failed jobs 0

Data processed 0 B

Last activity Never

This summary stays in your browser only.

Help

Frequently asked questions

Are my files uploaded?

No. Free Converter runs on-device in your browser, so your files stay local while converting or recording.

Which conversion sections are available?

You can use WebM to MP4, images to PDF, PDF merge, PNG or WebP to JPG, JPG or WebP to PNG, and JPG or PNG to WebP sections.

Can I use this on mobile?

Yes. The interface is responsive for desktop and mobile browsers, with the same local conversion workflow.