Choose the file
Drop the unfamiliar file into Fitabyte—no need to know its format.
Universal file helper
A file you cannot open? Fitabyte can help.
Inspect unfamiliar files, preview readable content, and convert supported images or documents into something useful.
HEIC conversion ODT & DOCX text extraction Private local processing
Drop the file you cannot open
Fitabyte identifies it, shows what is readable, and gives you a useful conversion when possible.
HEIC · AVIF · WebP · ODT · DOCX · JSON · XML · moreSimple by design
From upload to finished file.
Fitabyte opens it
The tool identifies images, documents, text, PDFs, and binary files.
Save a useful version
Convert images, export document text, or safely recover the original file.
Helpful details
Inspect a file when your device does not know what to do with it.
File Opener identifies many common image, office document, PDF, text, data, and code formats in your browser. It can preview readable content, extract text, or convert supported images into a more accessible format.
The tool is read-only until you choose to download a new version. Your original remains unchanged on your device, and Fitabyte does not store the file you select.
Common uses
Recover useful content from everyday files.
Phone photos
Convert HEIC or HEIF photos when another device, form, or website cannot open them.
Office documents
Extract readable text from DOCX and ODT files without installing a desktop office suite.
Data and logs
Inspect JSON, XML, CSV, YAML, log files, and source files in a clean browser preview.
Questions answered
Frequently asked questions
Can File Opener open every file format?
No single browser tool can decode every proprietary or encrypted format. Fitabyte identifies unsupported binary files safely and lets you recover the original.
Does opening a file change the original?
No. Previewing and extraction are read-only. A conversion or export creates a separate downloadable file.
Are my documents uploaded?
No. Supported previews, extraction, and conversion happen locally in your browser, and Fitabyte does not store the selected file.
What can I do with a HEIC file?
File Opener can decode supported HEIC or HEIF images and give you a more widely usable converted image.
Private by default
Your selected file stays in your browser. Fitabyte does not store your images or documents.
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