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Fast Text Format

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Fast Text Format Tools

The ultimate collection of lightning-fast utilities to format, convert, and streamline your workflow.

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Code & Formatting

Base64 to File

Decode Base64 strings or Data URIs back into downloadable files (images, PDFs, documents, audio) with instant live preview.

Code Beautifier

Beautify, validate, and minify your JSON, JavaScript, CSS, and HTML code into clean, readable syntax.

CSS Format

Format, beautify, validate, and minify CSS code with custom indentation.

CSS Visual Generators

Visually generate and export CSS code for Box Shadows, Gradients, Flexbox, and Grid layouts.

CSV to JSON/SQL

Convert CSV data to JSON arrays or SQL INSERT statements.

cURL to Fetch

Easily convert cURL commands into JavaScript Fetch API code.

HTML / XML

Beautify, minify, and clean up messy code instantly.

HTML to JSX

Client-side tool to transform HTML tags/attributes into React-compatible JSX.

HTML to Tailwind CSS

Convert standard inline styles and CSS declarations into Tailwind CSS utility classes with live preview.

JS Obfuscator

Transform readable JavaScript code into unreadable, minified code to protect logic.

JSON to Code

Convert JSON objects into typed models for various languages.

JSON Tree Viewer

Visually inspect, expand, collapse, search, and filter complex JSON payloads with path inspection.

Markdown

Write raw markdown with a live HTML preview.

Source Map Viewer

Client-side tool to upload a .map file and de-minify stack traces.

SQL Formatter

Beautify and format messy SQL queries.

String Escape & Unescape

Safely escape (and unescape) quotes, backslashes, and newlines for use in JSON strings, SQL queries, HTML, and Java/C#.

SVG Optimizer

Minify and clean raw SVG code.

SVG to PNG/WEBP

Client-side tool utilizing an HTML canvas to rasterize SVG code or files into downloadable images.

XML Utilities

Format and minify XML strings.

YAML <-> JSON

Instantly convert between YAML and JSON.

Data & Crypto

Generators & Utilities

ASCII Art

Generate large ASCII art text banners.

Barcode Generator

Client-side tool using a canvas to generate linear barcodes (UPC, EAN, Code39) from text.

CHMOD Calc

Calculate Linux file permissions easily.

Color Contrast

Check WCAG color contrast accessibility.

Color Format

Instantly convert HEX, RGB, and HSL color codes.

Cron Decoder

Translate cron schedules into human-readable text.

Favicon Generator

Convert standard images into universally compatible .ico files and generate standard web app icon sizes.

Image Base64

Convert image files into Base64 Data URI strings and CSS background-image properties.

Image Compressor

Compress and optimize JPEG, PNG, WEBP, and AVIF images locally in your browser.

Markdown Table Generator

A visual grid editor that allows users to easily add rows/columns and instantly outputs perfectly formatted Markdown table syntax.

Meta Tag & Open Graph Generator

Generate and visually preview SEO meta tags, Twitter Cards, and Facebook Open Graph tags.

Mock Data Generator

Generate hundreds of rows of fake test data (names, emails, addresses, dates, credit cards) and export it as CSV, JSON, or SQL INSERT statements for database testing.

Password Gen

Create strong, secure passwords using cryptographic algorithms.

PDF Toolkit

Merge, split, extract, rotate, and reorder PDF pages 100% locally in your browser.

Placeholder Text

Create random placeholder text for UI mockups.

QR Code

Create scalable, scannable QR codes from text or URLs.

Regex Tester & Builder

Test regular expressions with real-time match & capture group highlighting, syntax explanation breakdown, and multi-string test modes.

Robots.txt Generator

Build valid robots.txt rules, crawler directives, and block AI scrapers.

UUID / GUID

Instantly generate universally unique identifiers (v4).

XML Sitemap Generator

Construct valid XML sitemaps with custom URLs, change frequencies, and priorities for search engines.

Finance & Units

Networking

Code & Formatting

Base64 to File

Decode Base64 strings or Data URIs back into downloadable files (images, PDFs, documents, audio) with instant live preview.

Drag & drop a .txt or .b64 file, or paste your string below

File Preview
Auto-Detect 0 KB

Paste a Base64 string to preview the file.

Decoded Base64 Preview

PDF Document Ready

Decoded from Base64 successfully.

Binary File Decoded

How to Use

Paste a Base64 text string or Data URI (or drop a .b64 / .txt file). The tool automatically detects file type, extension, and MIME format from magic bytes, presents an instant interactive preview, and lets you download the decoded binary file.

Frequently Asked Questions

What is Base64 to file conversion?

Base64 to file conversion reconstructs raw binary bytes from an ASCII Base64 text string (such as data:image/png;base64,... or raw byte blocks), restoring the original digital file format so it can be previewed and saved directly to your disk.

How does automatic file type detection work without a Data URI prefix?

When raw Base64 without a MIME header is provided, this tool decodes the first few bytes and inspects the binary file signature (magic bytes). For example, PNG begins with bytes 89 50 4E 47, JPEG starts with FF D8 FF, and PDF documents begin with %PDF (25 50 44 46).

What file formats can be decoded from Base64?

Any binary or text file can be decoded, including PNG, JPEG, SVG, WebP, GIF, PDF documents, ZIP archives, MP3/WAV audio, MP4 videos, JSON data, and plain text.

How do raw Base64 strings differ from Data URIs?

A Data URI includes metadata explicitly declaring the media type and encoding scheme (e.g., data:application/pdf;base64,JVBERi0x...), whereas a raw Base64 string contains only the encoded ASCII byte characters without prefix headers.

How is file size calculated from a Base64 string?

Each Base64 character represents 6 bits of binary data. Four Base64 characters correspond to 3 decoded bytes. File size is computed by multiplying clean Base64 string length by 3/4 and subtracting trailing padding characters (= or ==).

What causes invalid Base64 decoding errors?

Decoding failures typically happen due to non-Base64 characters, improper URL encoding (%2B instead of +), truncated strings missing ending characters, or incorrect padding length.

What is the maximum file size that can be decoded in the browser?

Modern web browsers handle in-memory Base64 strings up to 50MB-100MB smoothly using Uint8Array and Blob streaming APIs without crashing browser tabs.

Can Base64 files contain malicious code or viruses?

Base64 is simply an encoding scheme. While standard image and document formats are safe to view in browser sandboxes, you should never execute unknown decoded executable files (.exe, .bat, .sh) from unverified sources.

How can I embed decoded files directly into web applications?

You can use the Data URI directly as the src attribute of <img>, <audio>, <video>, and <iframe> HTML tags, or generate temporary blob URLs using URL.createObjectURL(blob).

Are my Base64 strings or decoded files uploaded to any server?

No. All decoding, preview rendering, and file generation execute 100% client-side inside your browser using Uint8Array and Blob objects. Your files and data are never sent to external servers.

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