henka file lab

A small file lab for everyday changes

Give your files a new format.

A practical browser-based converter for the files you use every day. Choose a format, make the change, and keep your files on your device.

On the workbench

One place for all the little format fixes.

Images, PDFs, documents, spreadsheets, audio, and video share one clear workspace. No account or upload queue to manage.

01 / IMAGE

Images

Resize by format, keep transparency where supported, or make a PDF from an image.

02 / DOCUMENT

Documents & PDF

Move between common text formats or extract selectable text from a PDF.

03 / TABLE

Tables

Convert CSV, JSON, Excel, OpenDocument, and HTML tables.

04 / MEDIA

Audio & video

Convert common media formats with a local browser worker.

Open the file lab

Three steps, then done

A short route from source to result.

01

Choose a tool

Pick the file type that matches what you want to convert.

02

Set the result

Add files and choose the output format and available options.

03

Save it locally

Convert in your browser, then download the finished file.

The local-first promise

Your file takes the short route.

Conversion happens in your browser. Henka does not send your selected files to a conversion server. Audio and video tools are downloaded by your browser the first time you use them.

Read how file privacy works

Before you start

A few useful details.

Browse help and answers