Overview
Media and web content run into format friction just as often as documents and images do: a video that won't play in your editor, a subtitle file the wrong platform rejects, a webpage you need as a static screenshot rather than a live link. The converters below cover the audio, video, subtitle, and web-capture conversions that come up most in day-to-day content work.
Every tool runs client-side in the browser, so nothing you convert gets uploaded to a third party in the process.
What to Look For in a Media or Capture Converter
Accurate rendering, not a rough approximation. A webpage-to-screenshot or HTML-to-image tool should capture layout and styling faithfully, not a distorted or cropped version of what you'd actually see in a browser.
No meaningful quality loss on conversion. Audio and video format conversion should preserve quality at a given bitrate rather than silently degrading it, and subtitle conversion should preserve exact timing down to the millisecond.
Works from both a file and a live source where relevant. The best web-capture tools handle both raw HTML you already have and a live URL, since the two starting points come up in different situations.
Our Picks
Audio & Video Format Conversion
The Audio Format Converter and Video Format Converter handle the core problem of a media file encoded for one platform that won't open in another, while the Bitrate Converter helps you understand and adjust the data rate that determines file size and audio/video quality.
Subtitles: SRT and VTT
The SRT to VTT Converter and VTT to SRT Converter move subtitle files between the two formats different video platforms expect: SRT for most desktop and legacy players, VTT for HTML5-based web video.
Web Capture & Embedding
The HTML to Image Converter and Webpage to Screenshot Converter turn rendered web content into a static image, whether you're starting from raw HTML or a live URL. The Image to Base64 Converter goes the opposite direction, turning an image file into embeddable text for HTML, CSS, or JSON. The Screen Resolution Converter rounds out the group, clarifying the pixel dimensions behind common resolution and aspect-ratio names.
How We Evaluated
We tested format conversions against real audio, video, and subtitle files, checking that timing stayed accurate for subtitles and that playback quality held up at the same bitrate for audio and video. For the capture tools, we confirmed rendered output matched what a standard browser actually displays, and confirmed every tool works without an account or file upload to a remote server.