Is it really 100% offline?

Yes. Once installed, 1FileTool processes every single file entirely on your computer. There are no server calls, no uploads, no cloud processing. Your files never leave your device, ever.

What file formats are supported?

1FileTool supports 100+ file formats including PDF, JPG, PNG, WebP, SVG, GIF, MP4, MOV, AVI, MKV, MP3, WAV, FLAC, AAC, ZIP, CSV, XLSX, JSON, XML, HTML, Markdown, and many more.

Is there a free version?

Yes. 1FileTool is free to use with all 265+ tools and up to 8 files per day. Upgrade to Pro for unlimited processing with a one-time payment starting at $29.

How is this different from online tools like Smallpdf?

Online tools require uploading your files to their servers for processing. 1FileTool processes everything locally on your device, so your files never leave your computer. Plus, you pay once instead of monthly.

Does it work on both Mac and Windows?

Yes. 1FileTool is available as a native application for both macOS (Apple Silicon and Intel) and Windows (64-bit) with identical functionality.

Can an AI assistant use 1FileTool?

Yes. AI Access exposes 64 operations to Claude Code, Codex and Gemini over MCP. You ask for the work in plain language and your assistant sends instructions to the app on your machine — your files are never sent to the assistant.

Does the AI run on my computer?

Yes. Background removal, read-aloud, audiobook conversion, voice cleanup and PII detection all run on your device after a one-time model download. There is no AI API key and no per-use cost.

All Tools / Power Tools

Power Tools

83 tools in this category. 83 run directly in your browser and the rest are available in the desktop app.

Power Tools

Normalize Whitespace

Trim Each Line

Remove Non Ascii

Remove Non Printable

Collapse Newlines

Sort Lines Asc Case

Sort Lines Desc Case

Sort Lines Asc Insensitive

Sort Lines Desc Insensitive

Unique Lines Keep Order

Unique Lines Sorted

Reverse Lines

Shuffle Lines Deterministic

Add Line Numbers

Remove Line Numbers

Prefix Lines

Suffix Lines

Wrap Lines 80

Unwrap Lines

To Upper Case Locale

To Lower Case Locale

To Title Case Smart

To Sentence Case Smart

To Camel Case Smart

To Snake Case Smart

To Kebab Case Smart

To Pascal Case

To Constant Case

To Dot Case

To Path Case

Extract Emails

Extract Urls

Extract Hashtags

Extract Mentions

Mask Emails

Mask Phone Numbers

Mask Credit Cards

Strip HTML Tags

HTML Escape Strict

HTML Unescape Strict

URL Encode Component

URL Decode Component

Base64 Encode UTF-8

Base64 Decode UTF-8

Hex Encode UTF-8

Hex Decode UTF-8

MD5 Hash Text

SHA1 Hash Text

SHA256 Hash Text

SHA512 Hash Text

HMAC SHA256

Lorem Ipsum Short

Lorem Ipsum Long

Generate UUID V4

Generate Password Strong

Generate Password Pin

JSON Pretty Print

JSON Minify

JSON Sort Keys

JSON Validate

CSV Normalize Commas

CSV To TSV Text

TSV To CSV Text

Markdown To HTML Text

Markdown To Plain Text

Diff Words Text

Diff Lines Text

Count Text Stats

Count Readability

Slugify Text

Transliterate Ascii

Remove Diacritics

Replace Smart Quotes

Normalize Unicode NFC

Normalize Unicode NFKC

Detect Language Basic

Detect Text Encoding UTF-8

Create Checksum File

Verify Checksum File