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Document Tools
Manage PDF files and document images directly in your browser.
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Find calculators, formatters, converters, and generators that run directly in your browser on desktop and mobile.
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Networking
Practical calculators and utilities for networking, connectivity, and telecommunications.
15 active
Color Tools
Online tools for color conversion, palettes, gradients, accessibility, image color extraction, and web design.
Top picks
Featured tools
Document Tools
Merge PDF
Use Merge PDF online for practical document tools tasks. Fast, free, and runs directly in your browser.
Color Tools
Color Palette Generator
Use Color Palette Generator online for practical generators tasks. Fast, free, and runs directly in your browser.
Networking
IPv4 Subnet Calculator
Use IPv4 Subnet Calculator online for practical networking tasks. Fast, free, and runs directly in your browser.
Generators
QR Code Generator
Use QR Code Generator online for practical generators tasks. Fast, free, and runs directly in your browser.
Academic Tools
IEEE Citation Generator
Use IEEE Citation Generator online for practical academic tools tasks. Fast, free, and runs directly in your browser.
Image Processing Tools
Pixel RGB Inspector
Inspect a pixel coordinate and its complete color representations by clicking or moving the pointer.
Generators
Spin Wheel
Use Spin Wheel online for practical generators tasks. Fast, free, and runs directly in your browser.
Image Processing Tools
Image Statistics Analyzer
Analyze per-channel minimum, maximum, mean, median, mode, variance, standard deviation, skewness, and entropy.
Most frequently used
Popular tools
Generators
Spin Wheel
Use Spin Wheel online for practical generators tasks. Fast, free, and runs directly in your browser.
Document Tools
Merge PDF
Use Merge PDF online for practical document tools tasks. Fast, free, and runs directly in your browser.
Image Processing Tools
Pixel RGB Inspector
Inspect a pixel coordinate and its complete color representations by clicking or moving the pointer.
Generators
QR Code Generator
Use QR Code Generator online for practical generators tasks. Fast, free, and runs directly in your browser.
Generators
Barcode Generator
Use Barcode Generator online for practical generators tasks. Fast, free, and runs directly in your browser.
Networking
VLSM Calculator
Use VLSM Calculator online for practical networking tasks. Fast, free, and runs directly in your browser.
Document Tools
Compress PDF
Use Compress PDF online for practical document tools tasks. Fast, free, and runs directly in your browser.
Networking
IPv4 Subnet Calculator
Use IPv4 Subnet Calculator online for practical networking tasks. Fast, free, and runs directly in your browser.
Newly added
Latest tools
Electrical & Electronics Tools
ADC Resolution and PWM Calculator
Calculate ADC levels, LSB, quantization, and PWM voltage, timing, current, and power.
Electrical & Electronics Tools
RLC Resonance Calculator
Calculate resonance frequency, Q factor, bandwidth, cutoffs, impedance, and period.
Electrical & Electronics Tools
RC Time Constant Calculator
Calculate RC time constant, charging, discharging, and capacitor voltage over time.
Electrical & Electronics Tools
Transformer Turns Ratio Calculator
Calculate transformer voltage, turns, current, power, efficiency, and losses.
Electrical & Electronics Tools
Three-Phase Power Calculator
Calculate kW, kVA, kVAR, current, and star/delta balanced-system values.
Electrical & Electronics Tools
Wire Voltage Drop Calculator
Calculate cable resistance, voltage drop, power loss, and status for copper or aluminum.
Electrical & Electronics Tools
Battery Runtime Calculator
Estimate theoretical and practical battery runtime from capacity, load, efficiency, and configuration.
Electrical & Electronics Tools
Voltage Divider Calculator
Calculate divider output, target resistance, power, ratio, and loading effects.
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