Universal Format Converter

Pick a category, drop in one file and choose a target extension: images are genuinely re-encoded through a canvas, data files are rebuilt from JSON, and the rest are relabeled.

What is the Universal Format Converter?

The Universal Format Converter groups its targets into eight tabs: Image, Audio, Video, Document, Data, Archive, Font and Vector. Image conversion is real, drawing the picture onto an HTML canvas and re-encoding it at the quality you set. Data conversion is real too, parsing the file as JSON and emitting YAML, XML, TOML, INI, a query string or Base64. The audio, video, font and vector tabs, by contrast, rewrap the original bytes with a new MIME type and extension without transcoding anything.

Key Features

• Image tab offers PNG, JPEG, WebP, BMP, ICO, GIF, TIFF, SVG and AVIF
• Data tab restates JSON as YAML, XML, TOML, INI, a query string or Base64
• Quality slider from 10 to 100 percent plus width and height boxes
• Document tab writes a plain PDF, HTML, TXT, CSV or Markdown file
• Archive tab builds a real DEFLATE-compressed ZIP around your file

Common Use Cases

• Turning a PNG screenshot into a smaller JPEG at 70 percent quality
• Reading a JSON config as YAML before pasting it into a pipeline file
• Flattening a small API response into a query string for a quick URL test
• Wrapping a single file in a ZIP because a form insists on one

How to Use the Universal Format Converter

1. Choose the category tab that matches your file: Image, Data, Document and so on.
2. Drop the file on the upload zone; images, audio and video get an inline preview.
3. Click one of the extension buttons in the Convert To grid.
4. For images, set the quality slider and the width and height boxes first.
5. Press Convert File, then Download Converted File to save it as converted plus your extension.

Tips for Best Results

• Width and height default to 800 by 600 on every image conversion, so enter your real dimensions to skip resizing.
• Browsers can only encode PNG, JPEG and WebP from a canvas; other image targets quietly come back as PNG.
• The Data tab parses your input as JSON first, so feed it JSON and nothing else.
• Documents are read as plain text, so a real PDF or DOCX dropped here produces garbage.

Why Use WiserWork's Universal Format Converter?

Plenty of converters never tell you what they actually did to the file. This one is worth reaching for where the work is genuine, meaning image re-encoding, JSON restructuring and ZIP creation, and worth skipping where only the label changes. The file itself stays in your browser throughout, although the page does pull pdf-lib, JSZip and FileSaver from a public CDN to do the work.

Who Uses the Universal Format Converter?

Developers who want a JSON payload restated as YAML or a query string without installing anything, and anyone who needs a quick image re-encode or a one-file ZIP. If you need real audio or video transcoding, look elsewhere: that calls for an encoder such as FFmpeg, not a canvas element.

Frequently Asked Questions

What are all the target formats on each tab?

Image offers PNG, JPEG, WebP, BMP, ICO, GIF, TIFF, SVG and AVIF. Audio offers MP3, WAV, OGG, WebM, AAC, FLAC, M4A and WMA; Video offers MP4, WebM, OGG, AVI, MOV, MKV, FLV and WMV; Document offers PDF, TXT, HTML, CSV, DOCX, RTF, EPUB and MD; Data offers JSON, YAML, XML, CSV, TOML, INI, query string and Base64; Archive offers ZIP, TAR, GZ, 7Z and RAR; Font offers TTF, OTF, WOFF, WOFF2 and SVG; Vector offers SVG, PNG, JPG, PDF and EPS.

Which of those conversions actually change the file?

Image, Data, Document and Archive to ZIP do real work. Audio, video, font, vector and the non-ZIP archive targets copy the original bytes into a blob with a new MIME type and extension.

Will converting an MP4 to AVI give me a working AVI?

No. The bytes stay MP4 and only the name changes, so any player that reads the container rather than the extension still sees an MP4. Real transcoding needs a tool like FFmpeg or HandBrake.

Why did my BMP or TIFF download open as a PNG?

Canvas encoding is limited to what the browser supports, which in practice is PNG, JPEG and WebP. Ask for anything else and the browser silently substitutes PNG under the extension you chose.

What does the quality slider affect?

Only lossy canvas encodings, so JPEG and WebP. PNG ignores it entirely, and it has no effect on the audio or video tabs, where nothing is re-encoded in the first place.

How good is the Document to PDF conversion?

It is deliberately plain. The file is read as text and the first 50 lines are drawn on a single US Letter page at 10 point, each line truncated at 100 characters. Everything past that is dropped.

Do the DOCX, RTF and EPUB buttons produce real files of those types?

No. They fall through to a plain text blob carrying that extension, which Word or an e-reader will either refuse or render as raw text.

What happens if my file on the Data tab is not JSON?

The parse fails quietly and the whole file is treated as a single string, so the YAML and XML output degrades to that string. The emitter also writes YAML scalars unquoted, so check any value containing a colon.

Is the ZIP a real archive?

Yes. That path uses JSZip with DEFLATE compression and produces a standard ZIP holding your file under its original name. TAR, GZ, 7Z and RAR do not compress anything.

Does my file get uploaded?

The file never leaves your browser; every conversion runs in page JavaScript. The page does fetch pdf-lib, JSZip and FileSaver from a CDN, which is an ordinary script request carrying none of your data.

A converter is only useful when you know which of its buttons are doing real work. Stick to the image, data and ZIP paths here and you get files that behave; treat the rest as a rename.