100% Free & Private — No Signup Required

Tweak your files,
right in your browser.

Compress, convert, and edit PDF, image, video & audio files instantly. Everything runs client-side — your files never leave your device.

No Upload to ServersWorks OfflineUnlimited & Free Forever
🔒
100% Private
Files are processed entirely in your browser. Nothing is uploaded to any server.
⚡
Instant Processing
No waiting for uploads or downloads. Your files are processed in milliseconds.
🆓
Free Forever
No hidden costs, no file limits, no signup walls. Every tool is completely free.
🌐
Works Everywhere
Use on any device with a modern browser — desktop, tablet, or mobile.

Popular Tools

Our most-used tools — click to get started instantly.

📄
Compress PDF
Reduce PDF file size by up to 90% without losing quality
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📎
Merge PDF
Combine multiple PDF files into a single document
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✍️
Sign PDF
Add signatures and text to PDF documents
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✂️
Split PDF
Extract pages or split PDF into separate files
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🔄
Rotate PDF
Rotate PDF pages to any orientation
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🔓
Unlock PDF
Remove password protection from PDF files
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🔒
Protect PDF
Add password protection to PDF files
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🖼️
PDF to JPG
Convert PDF pages to high-quality JPG images
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📄
JPG to PDF
Combine JPG images into a single PDF document
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📷
HEIC to JPG
Convert iPhone HEIC photos to JPG format
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🖼️
Compress Image
Reduce image file size while preserving quality
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📐
Resize Image
Resize images to exact dimensions
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✂️
Crop Image
Crop images to any area visually
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📱
QR Code Generator
Create QR codes for any URL, text, or data
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🔐
Password Generator
Generate secure random passwords
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🖼️
Image to PDF
Convert any images to a single PDF
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📝
Word to PDF
Convert DOCX documents to PDF
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More Tools

🎂Age Calculator📊Percentage Calculator⚖️BMI Calculator💰Tip Calculator🏦Loan Calculator🎓GPA Calculator📅Date Calculator🎨Color Picker

Image Format Converter

Convert between any image format — click to start.

FROM ↓ / TO →JPGPNGWebPGIFBMPTIFFPDF
PNGConvert—ConvertConvertConvertConvertConvert
JPG—ConvertConvertConvertConvertConvertConvert
WebPConvertConvert—ConvertConvertConvertConvert
GIFConvertConvertConvert—ConvertConvertConvert
BMPConvertConvertConvertConvert—ConvertConvert
TIFFConvertConvertConvertConvertConvert—Convert
SVGConvertConvertConvertConvertConvertConvertConvert
AVIFConvertConvertConvertConvertConvertConvertConvert
ICOConvertConvertConvertConvertConvertConvertConvert
HEICConvertConvertConvertConvertConvertConvertConvert
PDFConvertConvertConvertConvertConvertConvert—

70 conversion tools available · All free, all client-side

Unit Converters

Popular unit conversions — instant results in your browser.

Kilometers to MilesMiles to KilometersKilograms to PoundsPounds to KilogramsCelsius to FahrenheitFahrenheit to CelsiusCentimeters to InchesInches to CentimetersLiters to Gallons (US)Gallons (US) to LitersKilometers per Hour to Miles per HourMiles per Hour to Kilometers per Hour

View all 146 unit converters →

Online Calculators

Free tools for everyday calculations.

🎂
Age Calculator
Calculate exact age in years, months, and days
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📊
Percentage Calculator
Calculate percentages, percentage change, and more
Use tool →
⚖️
BMI Calculator
Calculate Body Mass Index and health category
Use tool →
💰
Tip Calculator
Calculate tip amount and split bills easily
Use tool →
🏦
Loan Calculator
Calculate monthly payments and total interest
Use tool →
🎓
GPA Calculator
Calculate GPA from grades and credit hours
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📅
Date Calculator
Calculate days between dates or add/subtract days
Use tool →
🎨
Color Picker
Pick colors and convert between HEX, RGB, and HSL
Use tool →

View all calculators →

Coming Soon

More tools are on the way.

🎬Compress Video
🎞️Video to GIF
📄PDF to Word
✂️Remove Background

What Is TweakFiles?

TweakFiles is a collection of free online tools for processing files — including PDFs, images, videos, and audio — directly in your web browser. Unlike traditional online converters that upload your files to remote servers, TweakFiles processes everything client-side using modern browser APIs. This means your files never leave your device, giving you complete privacy and instant results.

Every tool on TweakFiles is 100% free with no file size limits, no registration requirements, and no hidden costs. Whether you need to compress a PDF by up to 90%, convert images between formats, or generate a QR code, TweakFiles handles it in seconds without any server round-trip.