Spot differences, deletions, and insertions between two versions of text, code, JSON, or documents side by side.
Calculates the Longest Common Subsequence (LCS) and Myers diff algorithm to highlight character-level and line-level changes with red/green visual syntax.
Verifying changes between contract revisions, debugging code snippets, or checking configuration files for subtle syntax typos.
Ranked by feature completeness, privacy safety, and ease of use.
The online diff tool to compare text, images, PDFs, and spreadsheets.
Diffchecker compares text, source code, images, PDFs, and Excel files, highlighting character-level and line-level differences side by side.
Full-featured, open-source in-browser Markdown editor with real-time sync.
StackEdit is an in-browser Markdown editor with synchronized scrolling, KaTeX math typesetting, UML diagrams, and direct GitHub/Drive syncing.
Seamless visualization of JSON, YAML, XML, and CSV data into interactive graphs.
JSON Crack transforms complex JSON, YAML, and CSV structures into interactive node graphs, making nested API payloads immediately understandable.
The Cyber Swiss Army Knife for encryption, encoding, compression, and analysis.
CyberChef is an open-source web application for executing cyber tasks: Base64, Hex, SHA hashing, JWT decoding, timestamps, and data parsing.
Online SQL formatter and beautifier supporting multiple SQL dialects.
SQLFormat formats, beautifies, and indents complex SQL queries for PostgreSQL, MySQL, Oracle, SQLite, and BigQuery with custom keyword casing.
Instant online line counter to count total lines, non-empty lines, empty lines, words, and characters.
Count lines in text files, code, logs, and spreadsheets in real time. Accurately calculates total line count, blank lines, word count, character statistics, and byte size locally in your browser.
Reverse lines of text, items in a list, or backwards character spelling in your browser.
Invert lists, chronologies, or datasets instantly. Supports line order reversal, word-by-word inversion, and character-level reversing with trimming options.
Sort text lines alphabetically A-Z, numerically, by line length, or randomly shuffle.
Order lines, lists, names, or values with customizable sorting algorithms. Choose alphabetical (A-Z / Z-A), natural numeric sort, line length ordering, or random shuffle.
Clean up whitespace by deleting all blank lines and collapsing consecutive spaces.
Strip blank lines and whitespace-only lines from code, markdown, logs, and text. Optionally collapse multiple consecutive blank lines into a single clean spacer.
Find and replace words, phrases, or regex patterns with real-time match counts.
Search and replace text across multi-line content. Supports case sensitivity matching, whole word boundary matching, and powerful JavaScript Regular Expressions (RegEx).
Extract emails, URLs, numbers, phone numbers, hashtags, mentions, or regex from text.
Scan and extract specific entities from unstructured text, HTML, or logs. Instantly pulls email addresses, links/URLs, telephone numbers, hashtags, @mentions, IP addresses, or custom patterns.
Decode Base64 strings or Data URIs into downloadable image files with live preview.
Convert Base64 encoded strings or data:image URIs into real image files (PNG, JPEG, WebP, SVG). Features auto-mime detection, dimension detection, and 1-click image download.
Common questions and practical advice for completing this task.
Yes, tools like Diffchecker process extensive text files and provide quick jump buttons between modified blocks.
Compose technical documentation, blog posts, and notes in Markdown with synchronized split-screen HTML preview and PDF export.
Fix malformed JSON, format minified API payloads with indentation, and explore complex nested JSON visually in an interactive tree.
Write regular expressions with instant match highlighting, capture group inspection, and plain-English regex token breakdowns.