345 free online tools
Find a tool by task, format, or name. Check its example and limits before working with PDFs, images, text, or data in your browser.
Explore tools
Sitemap generator
Turn a list of page URLs into a sitemap XML file.
Open Graph preview
Check Open Graph tags in pasted HTML and preview a share card.
Timestamp converter
Convert integer Unix timestamps and known-offset dates, with UTC and IANA-zone display.
Time zones and UTC formatting
Resolve time zones and daylight-saving ambiguity, or format an instant in UTC.
Days between dates
Find out just how far apart two dates are.
Add or subtract dates
Add or subtract time from a chosen date.
Stopwatch
Start a stopwatch, pause it, or record a lap.
Countdown timer
Set a countdown for the task in front of you.
Unit converter
Convert length, area, mass, volume and temperature with compatible units side by side.
Percentage calculator
Find a share, calculate an amount from a percent, or measure percentage change.
Aspect ratio calculator
Reduce a width and height to a ratio, then plan a proportional pixel size.
Data size converter
Convert bit and byte amounts across decimal MB/GB and binary MiB/GiB units.
Number base converter
Convert large integers exactly between binary, octal, decimal, hexadecimal and other bases.
Random number generator
Draw integers from a chosen range, with or without repeats, and copy the result in order.
Audio to WAV
Convert supported MP3 or WAV audio to 16-bit PCM WAV, with optional rate and channel settings.
Trim audio
Select one part of a WAV or MP3 recording and download the excerpt as WAV.
Merge audio
Put recordings or sound clips in order and join them into one WAV file.
Adjust audio volume
Raise or lower the volume and save a new WAV file.
Save a video frame
Capture a still image from a video and save it as PNG.
Video information
Inspect video duration, resolution, codecs, frame rate and file size.
Mute video
Remove every audio track from supported MP4 and WebM videos without re-encoding the picture.
Trim video
Trim supported WebM video and review its actual export range.
Create a ZIP
A few files. One easy-to-share package.
Extract ZIP
Extract every supported ZIP entry or select files by path.