What exactly does it remove or replace?

Special characters, spaces and accented letters are stripped or replaced with safe equivalents, leaving a clean name that works reliably across different systems and servers.

Will this change the file extension?

No, only the name portion is cleaned — the extension is left as-is so the file still opens with the correct application.

Can I clean the names of multiple files at once?

Yes, select a batch of files and each gets its name sanitized in the same pass.

Does File Name Cleaner upload my files to a server?

No. File Name Cleaner runs entirely in your browser using on-device processing, your files never leave your device.

File Name Cleaner

Sanitize file names by removing special characters, spaces and accents.

Runs in your browser

Drop files here

Choose File

Runs entirely in your browser, nothing is uploaded to a server.

About this tool

File names picked up from different sources — camera exports, downloads, scanned documents — often carry spaces, accented characters or special symbols that cause problems: broken links on certain web servers, mangled filenames after a file transfer, or scripts that choke on unexpected characters. This tool sanitizes file names by stripping special characters, spaces and accents, producing clean, portable names safe to use anywhere.

Frequently asked questions

Batch File Renamer

Rename many files at once using a pattern, and download them as a ZIP.

File Extension Changer

Rename a file's extension without converting its actual format.

Zip & Unzip Files

Combine files into a ZIP archive, or extract files from one.

File Size Converter

Convert between bytes, KB, MB, GB, and their binary (KiB/MiB/GiB) equivalents.

File Type Detector

Detect a file's true type from its byte signature, not just its extension.

Duplicate File Finder

Find identical files among a batch by comparing their content hash.

Hex Viewer

View the raw bytes of any file as a hex and ASCII dump.

File to Base64 Converter

Encode any file as Base64, or decode Base64 back into a downloadable file.

File Metadata Viewer

View a file's name, size, type and last-modified date.

GZIP Compressor

Compress or decompress a file using GZIP.

File Checksum Verifier

Verify a downloaded file against a published SHA checksum.

Archive Format Converter

Convert between ZIP and uncompressed TAR archives.

PDF Tools

Merge, split, compress and convert PDF files.

Image Tools

Compress, resize, crop and convert images.

Link & QR Tools

Shorten links and generate QR codes and barcodes.

Audio Tools

Convert audio files and turn text into speech, or speech into text.

Video Tools

Compress and process video files, right in your browser.

Developer Tools

JSON, encoding, hashing and text utilities for developers.

SEO & Web Tools

Meta tags, sitemaps, schema markup and other on-page SEO utilities.

Data & Spreadsheet Tools

Clean, convert and inspect CSV, TSV and tabular data.

Business Tools

Invoices, quotations, receipts and other business documents.

Social Media Tools

Resize images for social platforms, count hashtags and preview posts.