Lightning-Fast File Tools.
100% Private in Your Browser.
Process PDFs, Images, Videos & Audio instantly with local WebAssembly. No file uploads, no privacy risks, no waiting — process up to 5 files daily for free.
Zero Upload Delays
Files convert locally in your browser at full CPU speed with zero server upload wait time.
100% Private & Secure
Your data never leaves your device or touches remote servers. Zero privacy risks guaranteed.
105+ Smart Tools
All-in-one suite for PDF, Image, Video, Audio, Developer utilities & Calculators.
Calculators Tools
Showing 10 matching tools
Aspect Ratio Calculator - Calculate Dimensions (16:9, 4:3)
Calculate proportional width and height values for video and image scaling.
Byte to Bit Converter - Bandwidth Speed Calculator
Calculate network speed transfers (Megabits Mbps to Megabytes MB/s).
Color Contrast Checker - WCAG Accessibility Ratio
Test text color contrast ratios against backgrounds for WCAG 2.1 compliance.
Discount & Sales Tax Calculator
Calculate final sale prices after percentage discounts and local tax.
File Size Converter - Bytes, KB, MB, GB, TB Calculator
Convert data storage sizes between bytes, megabytes, and gigabytes.
Image DPI Converter - Change 72 DPI to 300 DPI for Print
Change photo DPI metadata for print preparation (300 DPI high resolution).
Percentage Calculator - Fast Math Computations
Calculate percentage increases, decreases, and difference values instantly.
Pixels to REM Converter - CSS Typography Calculator
Convert pixel (px) values to CSS REM and EM units based on root font size.
Time Zone Converter - Compare World Clock Times
Convert meeting times between UTC, EST, PST, GMT, and local time zones.
Unix Timestamp Converter - Epoch to Date Time
Convert Unix timestamps into human readable dates and vice versa.