Free Online Tools
268+ free online tools for PDF, images, SEO, developers, color, and productivity. Fast, browser-based, and private — no signup, no installs, no limits. Search above or browse by category below.
Total tools26810.8K total uses
Categories13Active categories
Most usedJSON Formatter4.1K uses
Recently addedExperiment RandomizerNewest tool
Data Plotter
Plot data as line, scatter, or bar charts from x,y pairs or separate columns. Enter lab results, calibration curves, or trial data — get an instant SVG chart with axis labels. Free, browser-based.
Used 1 times•Updated 18 minutes ago
Graph Generator
Graph mathematical functions y = f(x) instantly. Enter expressions like sin(x), x^2, exp(x), or multiple functions — get an SVG plot with axes, grid, and auto-scaling. Free, browser-based.
Used 1 times•Updated 19 minutes ago
PDF to JPG
Convert PDF pages to JPG images in your browser with adjustable quality and resolution.
Used 0 times•Updated never
PDF Password Protect
Add password protection and permission restrictions to PDF files entirely in your browser.
Used 0 times•Updated never
PDF Summary Generator
Upload a PDF and generate an AI summary using your own OpenAI, Anthropic, Google, or Groq API key.
Used 0 times•Updated never
AI Email Writer
Draft professional emails with AI using your own OpenAI, Anthropic, Google, or Groq API key.
Used 0 times•Updated never
AI Blog Generator
Generate SEO-friendly blog posts with title, meta description, and markdown content using your own AI API key.
Used 0 times•Updated never
AI Hashtag Generator
Generate relevant social media hashtags for Instagram, TikTok, LinkedIn, and more using your own AI API key.
Used 0 times•Updated never
Image Compressor
Compress images in your browser by adjusting quality, output format, and max dimensions to reduce file size.
Used 0 times•Updated never
Used 0 times•Updated never
Used 0 times•Updated never
Color Contrast Checker
Check WCAG contrast ratios between text and background colors for accessibility compliance.
Used 0 times•Updated never