Free Online PDF, Image & Developer Tools
Merge PDFs, compress images, format JSON, generate hashes, and more - no signup, no watermarks, no limits.
56tools · 100% free · No registration
Merge, split, compress, convert, protect, and repair PDF documents
Merge PDF
Combine multiple PDF files into a single document
Split PDF
Extract pages or split a PDF into separate files
Compress PDF
Reduce PDF file size while maintaining quality
PDF to Image
Convert PDF pages to JPG or PNG images
Image to PDF
Convert images into a PDF document
Rotate PDF
Rotate PDF pages by 90, 180, or 270 degrees
Watermark PDF
Add text watermarks to PDF pages
Page Numbers
Add page numbers to a PDF document
Protect PDF
Password-protect and encrypt a PDF document
Unlock PDF
Remove password protection from a PDF
Organize PDF
Reorder, delete, and rearrange PDF pages
Repair PDF
Fix corrupted or damaged PDF files
Convert PDF
Convert documents to and from PDF format
Word to PDF
Convert Word documents to PDF format
Excel to PDF
Convert Excel spreadsheets to PDF format
PowerPoint to PDF
Convert PowerPoint presentations to PDF format
HTML to PDF
Convert HTML files to PDF documents
PDF to Word
Convert PDF documents to editable Word files
PDF to Excel
Extract tables from PDF into Excel spreadsheets
PDF to PowerPoint
Convert PDF pages to PowerPoint slides
PDF to PDF/A
Convert PDF to the archival PDF/A-2b standard
Need to work with images instead? Utilavo also includes a full set of browser-based image editing tools — resize, crop, compress, rotate, watermark, and convert between 8 formats including JPG, PNG, WebP, AVIF, and HEIC. All image processing runs locally on your device.
Resize, compress, convert, and edit images
Resize Image
Change image dimensions with precise control
Compress Image
Reduce image file size without visible quality loss
Convert Image
Convert between JPG, PNG, WebP, and other formats
Crop Image
Trim and crop images to any aspect ratio
Rotate Image
Rotate, flip, and mirror images
Watermark Image
Add text watermarks to images
PNG to JPG Converter
Convert PNG images to JPG format online, free
JPG to PNG Converter
Convert JPG images to PNG format with transparency support
WebP to JPG Converter
Convert WebP images to JPG for universal compatibility
JPG to WebP Converter
Convert JPG images to WebP for faster websites
WebP to PNG Converter
Convert WebP images to lossless PNG format
PNG to WebP Converter
Convert PNG images to WebP for smaller file sizes
PNG to AVIF Converter
Convert PNG images to AVIF for maximum compression
JPG to AVIF Converter
Convert JPG images to AVIF for best-in-class compression
AVIF to JPG Converter
Convert AVIF images to JPG for universal compatibility
TIFF to JPG Converter
Convert TIFF images to JPG to reduce large file sizes
GIF to JPG Converter
Convert GIF images to JPG with full colour depth
GIF to PNG Converter
Convert GIF images to PNG with better colour and transparency
HEIC to JPG Converter
Convert iPhone HEIC photos to universally compatible JPG
HEIC to PNG Converter
Convert HEIC photos to lossless PNG for editing and archiving
HEIC to WebP Converter
Convert HEIC photos to WebP for fast, modern web images
For data formatting, encoding, hashing, and encryption, the developer tools section covers the quick transformations that come up daily in software development — from JSON validation to regex testing to cryptographic operations.
Format, validate, encode, and transform data
JSON Formatter
Format, validate, and prettify JSON data online for API debugging and code review
Base64 Encoder
Encode and decode Base64 strings and files for APIs, emails, and data URIs
URL Encoder
Encode and decode URL components online for safe query strings and API parameters
Hash Generator
Generate MD5, SHA-256, SHA-512, BLAKE3, and 25+ cryptographic hashes to verify file integrity
Regex Tester
Test and debug regular expressions online with live matching and capture groups
Color Converter
Convert colors online between HEX, RGB, HSL, OKLCH, and CMYK for CSS and design
Epoch Converter
Convert Unix timestamps to human-readable dates online with live clock and timezone support
HMAC Generator
Generate HMAC-SHA256 and HMAC-SHA512 authentication codes to sign API requests and verify webhooks
Random String Generator
Generate secure random passwords, API keys, and tokens with cryptographic randomness
Encrypt / Decrypt
Encrypt and decrypt data with AES, DES, Triple DES, and RC4 symmetric ciphers
Latest guides
View allPractical tutorials and in-depth guides for working with PDFs, images, and developer tools.
Lossy vs Lossless Compression: When to Use Each
Understand the difference between lossy and lossless compression for images and PDFs. Learn how each method works, quality trade-offs, and when to choose one over the other.
URL Encoding: Percent-Encoding for Web Developers
A practical reference for URL encoding (percent-encoding), covering reserved characters, query parameters, internationalized URLs, and common encoding mistakes.
Regular Expressions: A Practical Guide for Developers
Learn regular expressions from the ground up with practical examples, common patterns, debugging tips, and a reference of essential regex syntax.
What is Utilavo?
Utilavo is a free online platform with over 50 browser-based tools for PDF editing, image processing, and developer utilities. No signup, no watermarks, and no software installation required. Tools include merging PDFs, compressing images, formatting JSON, generating cryptographic hashes, and dozens more.
The tools span three main areas: document workflows (merge, split, compress, convert, and secure PDF files), image optimization (resize, crop, compress, and convert between formats like JPG, PNG, WebP, and AVIF), and developer data transformation (format JSON, encode Base64, generate hashes, test regex, and encrypt data with industry-standard algorithms).
Privacy is built into the platform. Most tools run entirely in your browser, so your files never leave your device. The few tools that require server-side processing — such as PDF compression and document conversion — transfer files over encrypted HTTPS and delete them immediately after your download completes.
Utilavo is built on established open-source technology: pdf-lib for browser-side PDF manipulation, Ghostscript for compression, LibreOffice for document conversion, sharp for image processing, and Web Crypto APIs for hashing and encryption. Non-intrusive ads keep the platform free and sustainable. Learn more on the About page.
How it works
Choose a tool
Browse by category or search by name. Each tool page explains what it does, how it works, and answers common questions.
Upload or paste your data
Drag and drop files into the upload zone, or paste text and data directly into developer tools. Files up to 50 MB are supported.
Download your result
Processing happens instantly in your browser or on the server. Download the result and your files are gone — nothing is stored.
Why Utilavo?
No account required
Every tool works immediately — no signup, no email, no login prompts.
Privacy-first processing
Most tools run in your browser. Server tools delete files immediately after download.
50+ professional tools
PDF, image, and developer tools covering the most common file processing tasks.
Built on open source
Powered by established libraries: pdf-lib, Ghostscript, LibreOffice, sharp, and more.
Works on any device
Fully responsive — works on phones, tablets, and desktops with no app to install.
Free and sustainable
Non-intrusive ads keep all tools free. No premium tiers or locked features.
Frequently asked questions
Are Utilavo tools really free?
Yes. Every tool is completely free with no subscriptions, usage limits, or watermarks. There are no premium tiers, no hidden costs, and no features locked behind a paywall or login wall.
Are my files safe?
Browser-based tools process files on your device — no upload. Server-based tools transfer over encrypted HTTPS, process in isolation, and delete immediately after download. Files are never stored, logged, or shared.
Do I need to create an account?
No. All tools work immediately without accounts, signups, or email. Open any tool, upload your file, and start processing. No trial periods or login prompts.
What file size limit applies?
The maximum is 50 MB per file for all tools. For larger PDFs, split them first, process each part, then merge the results.
What types of tools does Utilavo offer?
Three categories: PDF tools (merge, split, compress, convert, secure), Image tools (resize, crop, compress, rotate, watermark, convert between JPG/PNG/WebP/AVIF/HEIC), and Developer tools (JSON formatter, Base64 encoder, hash generator, regex tester, encryption).
Can I use Utilavo on mobile devices?
Yes. Utilavo is fully responsive and works on phones, tablets, and desktops. All tools have touch-friendly controls and adapt to any screen size.