Free Online File Tools
Use free browser-based file tools to work with audio, trim clips, view CSV data, check file hashes and clean filenames where supported.
Free Online File Tools for everyday tasks
Use focused utilities for common file tasks such as checking a hash, cleaning filenames, viewing comma-separated data or trimming audio. Browser and format support can vary; preview the result and keep the original file until you verify the download.
Choosing the right tool
Start with the exact task you need to complete, then choose the matching workspace. Check input requirements and review your result before relying on it. Toolnook provides general-purpose helpers; it does not replace official tax, legal, medical or financial guidance.
Frequently asked questions
Which file formats are supported?
Supported formats are listed by each tool. Browser support, file size and loaded libraries can affect what can be processed.
Can I trust a file hash to identify a file?
A matching cryptographic hash is useful for checking file integrity, but you must compare it with a trusted reference hash.
Will large audio files work on mobile?
Large files can use significant memory and processing time. For a difficult conversion, a desktop browser may be more reliable.
Calculations are estimates where inputs or local rules vary. Always check official requirements for tax, legal, immigration or health-related decisions.