Ferramentas online gratuitas
405+ 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 tools405Available free tools
Categories15Active categories
Most usedCSV to ExcelPopular right now
Recently addedInterval Music RepeaterNewest tool
Video Compressor
Free video compressor — reduce MP4 or WebM file size in your browser. Choose quality presets, preview savings, and download. Private, no upload, no signup.
Minecraft Circle Generator
Free Minecraft circle generator — generate X/Z block coordinates for circles or filled disks by radius. Copy coords for building.
Timestamp DateTime Converter
Free timestamp converter — Unix epoch, ISO 8601, SQL datetime, and more, both ways. Instant, in your browser.
Young's Modulus Calculator
Calculate Young's modulus E = σ/ε from stress and strain, or from a tensile test (force, area, elongation). Convert between GPa, MPa, Msi, ksi, and psi. Compare to common material references. Free, browser-based.
Lofi Music Player
Free copyright-free lofi music player for study and focus — procedural beats in your browser with moods, BPM, vinyl crackle, and a focus timer.
GraphQL Formatter
Free online GraphQL formatter and pretty printer — format or minify queries, mutations, and fragments in your browser.
Video to GIF Converter
Free video to GIF converter — turn MP4 or WebM clips into animated GIFs in your browser. Trim, resize, and download. Private, no upload, no signup.
Tip Calculator
Calculate tip amount, total bill, and fair split per person with quick percentage presets.
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.
Punnett Square Generator
Generate Punnett squares for monohybrid and dihybrid crosses with custom trait names, parent labels, and genotype or phenotype ratios. Free, instant, browser-based.
PDF Compressor
Free PDF compressor — shrink PDF size in your browser with quality presets. No signup; files stay on your device.
Reverse DNS Lookup
Look up PTR reverse DNS records for a public IP address. Resolve hostnames and verify forward DNS (FCrDNS) alignment.