ONLINE TOOLS · 77 TOOLS

Online tools for AI, text, SEO, images, PDF, and code

ExtraTools brings together browser-based tools for AI-style text review, SEO analysis, editing, images, PDF documents, code, audio, video, and files. Browse a category or search for a tool.

The AI text detector reports heuristic matches with local Russian and English phrase lists. Its score is not an AI probability or proof of authorship.

77 tools · choose a card to open a tool

text-tools

Text tools

Count, clean, convert, compare, and edit text.

29 tools

Text notepad Edit text, undo changes, and save a UTF-8 document. Undo and redoSave TXT Document editor Write and format text, create tables, and save DOCX or TXT files. Text formattingDOCX and TXT Text and code comparison Compare two versions of text, code, or files. Find line and word changes, then export a patch. Side-by-side and unified viewsWord and character highlights Combination generator Generate combinations from a list and control the result size. Combinations from stringsOutput limit Unicode and Unix timestamp Convert Unicode characters and Unix timestamps in both directions. Unicode and escape codesSeconds and milliseconds Column extractor Select columns from CSV and delimited text, then build the output. CSV and tabulationSelect columns Vowel remover Remove vowels and punctuation with options for Cyrillic and Latin text. Russian and EnglishAdjusting removal Duplicate remover Find duplicate lines or words and compare them with case and whitespace options. Lines and wordsOrder and case Find and replace Find and replace text with case-sensitive, whole-word, and regular-expression options. Regular searchRegular expressions Number list generator Generate number sequences from a start, end, and step. Range and stepFormat options List joiner Join two lists line by line and choose a separator. Line by lineJoin options Diacritics and punctuation Remove diacritics and punctuation while keeping selected characters. Accents and punctuationCharacter options Text case converter Change the case of letters, words, and sentences in Russian or English text. Uppercase and lowercaseTitle formats Line break tools Insert, remove, or replace line breaks and adjust wrapping. Insert and removeWord wrap Line combinations Combine lines from multiple lists and control the number of variations. List combinationsOutput limit Text line filter Keep or remove lines by one or more conditions. Include or excludeCase and patterns Blank lines and whitespace Remove extra spaces, blank lines, and repeated indentation. Whitespace cleanupBlank line options List comparison Compare lists to find matches, unique entries, and missing lines. Difference and intersectionCompare without duplicates Line numbering Add numbers to lines and customize the numbering format. Prefix and separatorBlank lines Permutation generator Generate permutations of list items and limit the output size. All item ordersResult limit Prefix and suffix Add text to the start or end of each line while keeping indentation and blank lines. Line numberingNo repeated labels Random picker and shuffler Pick random lines or shuffle the order of lines, words, or characters. Line selectionText shuffling Random numbers and strings Generate random numbers, strings, and passwords from chosen character sets. Numbers and textLength and character set Text repeater Repeat a line or text block a set number of times with a separator. Repeat text and linesLine-by-line mode Text reverser Reverse characters, words, or lines without breaking Unicode graphemes. Text and linesCyrillic and emoji Word scrambler Shuffle letters within words and find possible original forms. Random orderPreserve punctuation Line sorter Sort lines alphabetically, numerically, or by length with case and duplicate options. RU and ENNumeric sorting Transliterator Transliterate Russian and Ukrainian text between Cyrillic and Latin using selected rules. Russian and UkrainianMultiple standards UTF-8 converter Convert text files to UTF-8 and save with or without a BOM. Encoding detectionTXT, HTML, PHP, CSS, JS

seo

SEO tools

Analyze SEO text, audit HTML pages, and group search queries for a content plan.

3 tools

SEO text analyzer Review text length, word frequency, and topic hints in Russian or English content. Russian and English word frequencyTopics and text statistics On-page SEO audit Check page HTML for metadata, headings, canonical, links, images, and JSON-LD. On-page SEO checksLocal HTML audit Keyword clustering tool Group similar queries, find duplicates, and label likely search intent. Russian and English clustersCSV and TXT export

AI tools

Review Russian and English text for template phrases and recurring AI-style structure signals.

1 tool

AI text detector Review Russian and English text for template-like phrases, repetitions, and structural patterns. The result shows matching style signals, not the probability that AI wrote it. Russian and English (US) phrase listsPhrases, repetition, and structure

graphic-tools

Image tools

Create and edit graphics, draw on layers, style images, and pick colors.

11 tools

EXIF Cleaner Remove image metadata and edit common fields in supported formats. Metadata removalBasic editing Design, HTML snapshot and watermark Style screenshots, render HTML pages as images, and add text or image watermarks. HTML → PNG / JPGStyling and watermark Image Effects Apply blur, pixelation, inversion, black and white, and dithering effects. Multiple effectsBlur a selected area Palette and image colors Pick a color, sample shades from an image, and replace a selected color. HEX, RGB, HSL, HSVEyedropper and color replacement Icons, favicon, and tiles Create favicons for sites, icon sets and cut the image into tiles. ICO, PNG and HTML codeSets and tiles Converter and image processing Convert formats and compress images, merge photos to PDF, convert PDF and HTML to images, create SVG. Images ↔ PDFFormats, SVG and HTML Removing background Remove the background from JPG, PNG, WebP and HEIC, refine the mask and process the photo in packages with ZIP download. WebP and HEIC/HEIFBatch processing and ZIP Size, cropping and Zoom Set exact dimensions, crop square or circular images, rotate, and upscale by 2× or 4×. Exact sizing and circle cropAI ×2 / ×4, HEIC CSS Shadow Generator Adjust box-shadow and text-shadow values and copy the CSS. Box and text shadowsCSS preview SVG background generator Create SVG patterns and customize their background in a visual editor. Multiple pattern typesSVG and CSS ASCII art generator Turn an image into ASCII art and adjust width, characters, and contrast. In-browser previewCopy and TXT export

pdf-tools

PDF tools

Convert documents, compress PDFs, recognize scanned pages, organize pages, add page numbers and watermarks, fill forms, add signatures, and protect files.

5 tools

PDF and document converter Convert Word, EPUB, PowerPoint, Excel, HTML, TXT, and CSV to PDF, or extract PDF content as Markdown. DOCX · EPUB · PPTX · XLSXPDF → Markdown Compress PDF Reduce PDF file size while keeping text, or compress scans more by turning pages into images. Files stay on this device. Keep textMaximum scan compression PDF page operations Split and merge PDFs, extract or delete pages, and reorder them. Local processing; files up to 100 MB. 5 PDF modesExtract · delete · reorder PDF Editor Rotate and crop pages, add text, images, annotations, page numbers, and text or logo watermarks. Page numbers and watermarksCrop · text · annotations PDF forms and protection Fill out existing PDF forms, add a signature, set or remove a password, flatten pages, and permanently hide selected areas. Files are processed locally. Forms and signaturePassword · flatten · redact

programmer-tools

Developer tools

Test regular expressions, format data, and build code.

11 tools

PHP-sandbox Run short PHP snippets, inspect the output, and save the source code. PHP 8.5Limits and .php file Text and binary Convert text to binary and decode it back. Text ↔ binarySeparators and width Complex of calculations for programmers Work with number bases, bits, IP addresses, time, encodings, and data sizes. Numbers and bitsNetworks, Unicode, and time JSON Formatter Validate, format, and minify JSON, then inspect its data structure. Error highlightingFormatting and minification Regular expression tester Build and test regular expressions with live match highlighting, capture groups, and replacement previews. Live match highlighting and capture groupsJavaScript RegExp and PHP PCRE JavaScript/CSS Optimizer Adapt JavaScript and CSS syntax for browsers without minifying, or reduce file size with a separate compressor. Code optimizationSeparate minifier JS/CSS Obfuscator Make JavaScript and CSS harder to read with several strength levels, local processing, and copy or download output. JavaScript and CSSLight · balanced · strong JavaScript DeobfuscatorBETA Format JavaScript and try safe recovery of supported patterns. BETA: complete recovery is not guaranteed. JavaScript deobfuscationBETA · No code execution JSON in Zod and TypeScript Generate Zod schemas and TypeScript types from a JSON sample. Zod schemaTypeScript types Text in JavaScript Escape text and create JavaScript strings in different formats. Literals and templatesUnicode and special characters XML, JSON and SQL Converter Convert data between XML, JSON, and SQL and validate the source format. JSON ↔ XMLSQL and validation

measurement-tools

Measurements and converters

Convert measurements and paper sizes, and calibrate an on-screen ruler.

3 tools

Paper sizes in pixels Convert A-series and other paper sizes to pixels at a selected DPI. DPI and orientationCentimeters and inches On-screen ruler Open the ruler in a separate window and calibrate the inch or centimeter scale. Centimeters and inchesScale up to 30 cm Unit converter Convert length, weight, volume, pressure, energy, and other units. Metric and imperial unitsMore than 200 units

crypto-tools

Encryption and encoding

Encrypt text, encode strings, create secure keys, and apply simple letter transformations.

4 tools

AES-GCM text encryption Encrypt and decrypt messages with a password. AES-GCMCyrillic and UTF-8 Text encoder Encode text as Base64, URL, HEX, or UUencode; convert text encodings, compress data, and calculate SHA hashes. Base64 · URL · HEXEncodings and compression Secure key generator Generate random keys from cryptographically secure bytes in HEX, Base64, or Base64URL, with code examples. 32 random bytes and AES keysPHP, Node.js, Python, Go, and Ruby ROT13 and cipher Caesar Apply ROT13 or choose a custom shift for alphabetic text. Encryption and decryptionCyrillic and Latin

utility-tools

Utilities

Scan and create codes, recognize text, and archive files.

5 tools

Table generator Create and edit tables, inspect SQL, and save in different formats. XLSX, DOCX, HTML, and SQLCSV, JSON, JPG, and more Image text recognition Extract text from photos, scans, and screenshots in Russian, English, Arabic, Turkish, and European languages. 35 language modelsBatch mode · TXT and DOCX QR codes and barcodes Scan QR codes and barcodes from images or a camera, or generate QR and common linear codes. Offline scanningPNG and other formats Click counter Increase or decrease the count with buttons or the keyboard, set the step, and reset the counter. Keyboard and buttonsCustom step File archiver Create ZIP, 7z, TAR, and GZ archives; open ZIP, 7z, TAR, GZ, and RAR files and download extracted files. ZIP, 7z, TAR, GZOpen RAR archives

audio-tools

Audio tools

Edit MP3 tags and trim audio clips directly in your browser.

2 tools

MP3 tag editor Edit seven ID3 fields in one MP3 or batch-process up to five files in your browser. Audio is not uploaded to a serverOne file or a batch of up to 5 MP3 trimmer Trim an audio clip by start and end times or remove unwanted sections from its edges. Precise time trimmingNo quality loss

video-tools

Video tools

Trim clips by their start and end or choose an exact time range.

1 tool

Video trimmer Remove unwanted parts at the start or end, or set exact clip boundaries. MP4, MPG, and MPEGTime-based trimming

entertainment

Games and entertainment

Play NES / Famicom and Sega Mega Drive games, connect a gamepad, and save game states.

2 tools

NES / Famicom emulator Play built-in games or open your own ROM files, configure controls, and save the game state. Two emulation coresGamepad and save states Sega Mega Drive / Genesis emulator Play built-in Mega Drive and Genesis games or open your own ROM files in the browser. Locally bundled Genesis Plus GX coreKeyboard, gamepad, and save states

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Browse tools for SEO text analysis, text and image editing, audio, data conversion, programming, measurements, video, and files. Use search or the category menu to find a tool.