All Toolumina tools
Browse the launch index of 29 Toolumina utilities by workflow, from developer utilities and security helpers to marketing, text, image, PDF, generator, and unit tools.
Need a complete tool chain?
Explore 8 step-by-step workflows that connect PDF, image, SEO, JSON, security, and business tools into practical sequences.
Marketing
Campaign URL builders, search preview checks, receipt tools, and other lightweight utilities for practical marketing workflows.
Text
Clean, count, compare, extract, and format text in the browser for writing, editing, and content operations.
Text Diff Checker
Compare two text blocks with line and inline highlights, counts, swap, clear, and paste workflows.
Slug Generator
Turn titles into clean SEO-friendly URL slugs with separators, stop words, and limits.
Word and Character Counter
Count words, characters, sentences, paragraphs, keyword density, readability, reading time, and character distribution.
Image
Resize, compress, crop, convert, color-adjust, watermark, pixelate, and prepare visual assets locally in your browser for publishing and sharing.
Image Cropper
Crop images locally with preset ratios, rotation, flipping, quality, format, preview, and download.
Color Picker and Converter
Pick colors, convert HEX, RGB, HSL, and HSV, copy values, and save a small local palette.
Image Compressor
Compress JPG, PNG, and WebP images locally with quality, format, preview, and download.
Image Resizer
Resize JPG, PNG, and WebP images by width, height, percentage, presets, and fit mode.
Merge, split, compress, convert, and create PDF files locally in your browser.
Image to PDF
Combine JPG, PNG, and WebP images into a downloadable PDF with sizing, margins, and ordering.
Merge PDF
Merge multiple PDF files locally, reorder them, choose page ranges, and download one combined PDF.
Compress PDF
Optimize PDF structure locally with compression level choices, original size, estimate, and download.
Split PDF
Split a PDF into every page, every N pages, or a selected page range and download a ZIP.
PDF to JPG
Render PDF pages to JPG images locally and download one image or a ZIP for multi-page files.
Generator
Generate passwords, UUIDs, placeholder text, random numbers, codes, QR codes, and other useful values locally.
Developer
JSON, timestamp, regex, keyboard, mouse, data conversion, and other small utilities for builders and technical teams.
JSON Compare and Diff Tool
Compare two JSON snippets and review added, removed, changed, and type-changed fields.
JSON Schema Validator
Validate JSON against a local schema and locate missing fields, type errors, and rule failures.
JSON Formatter
Format and validate JSON in the browser before using other JSON tools.
Security
Local-first tools for hashes, keys, JWTs, signing, encoders, DNS lookups, and defensive security workflows.
URL Defang / Refang Tool
Safely defang or refang URLs, domains, and IP indicators for security analysis.
IOC Extractor
Extract URLs, domains, IP addresses, and hashes from security reports, logs, and pasted text.
SSL Certificate Decoder
Parse PEM SSL certificates locally and inspect subject, issuer, SAN, dates, and fingerprints.
CSR Decoder
Decode certificate signing requests locally and review CN, SAN, algorithms, and key details.
CIDR Calculator
Calculate IPv4 and IPv6 CIDR ranges, masks, address counts, and subnet splits.
Base64 Encoder and Decoder
Encode and decode Unicode text, URL-safe Base64, and small local files in your browser.
URL Encoder and Decoder
Encode, decode, and parse URL text or query strings without requesting the URL.
JWT Decoder
Decode JWT header and payload locally and inspect exp, iat, and nbf timestamps.
Hash Generator
Generate SHA-256, SHA-512, SHA-1, and MD5 hashes for text or files locally.