All Free Online Tools
Browse all free online tools: text sort & dedupe, PDF merge/split/compress, document conversion (HWP, DOCX, TXT), JSON formatter, Base64, image resize, world clock, and unit converters.
Text tools
Text sort & dedupe
Sort large text files line-by-line and remove duplicate lines instantly. Handles files up to 25 MB. Download result as TXT. Free, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Text sort (keep duplicates)
Sort text lines alphabetically while keeping all duplicates. Upload a TXT file up to 25 MB and download the sorted result. Free, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Trim line whitespace
Remove leading and trailing spaces and tabs from every line in your text file. Clean up messy text data instantly. Free online tool, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Remove empty lines
Delete all empty or whitespace-only lines from your text file. Instantly clean up blank lines and download the result. Free online tool, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Line, word & character count
Count lines, words, and characters in any text file. Download a detailed summary as TXT. Fast, accurate, handles large files. Free, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Line ending converter
Convert line endings to CRLF, LF, or CR. Free online tool, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Text case converter
Convert text between camelCase, PascalCase, snake_case, kebab-case, UPPER_SNAKE_CASE, Title Case, uppercase, and lowercase. Free online tool, no sign-up.
Format: .txt, text/plain. Maximum size: 25 MB.
Text diff & compare
Compare two texts line-by-line and highlight added or removed lines. Free online diff checker, no sign-up, works in your browser.
Time & clock
PDF tools
Merge PDFs
Combine up to 10 PDF files into one document online. Drag, reorder, and merge PDFs instantly. No sign-up, completely free.
Format: .pdf, application/pdf. Maximum size: 25 MB.
Split PDF
Split a PDF into individual pages and download as a ZIP file. Fast, free, handles files up to 50 MB. No sign-up required.
Format: .pdf, application/pdf. Maximum size: 50 MB.
Compress PDF
Reduce PDF file size online without losing readability. Compress PDFs up to 50 MB instantly. Free, no sign-up, no software to install.
Format: .pdf, application/pdf. Maximum size: 50 MB.
Extract text from PDF
Extract all text content from a PDF and download it as a plain TXT file. Handles PDFs up to 50 MB. Free online tool, no sign-up.
Format: .pdf, application/pdf. Maximum size: 50 MB.
Document conversion
HWP to TXT converter
Convert Korean HWP (Hangul Word Processor) files to plain text online. Free, no sign-up, no software installation required.
Format: .hwp, application/x-hwp, application/haansofthwp. Maximum size: 25 MB.
HWP to PDF converter
Convert Korean HWP (Hangul) documents to PDF online. Preserve content and formatting. Free, no sign-up, works in your browser.
Format: .hwp, application/x-hwp, application/haansofthwp. Maximum size: 25 MB.
HWP to DOCX converter
Convert Korean HWP (Hangul) files to Microsoft Word DOCX format online. Free, no sign-up, no software needed.
Format: .hwp, application/x-hwp, application/haansofthwp. Maximum size: 25 MB.
PDF to DOCX converter
Convert PDF files to editable Word DOCX documents online. Text is extracted and reformatted. Free, no sign-up required.
Format: .pdf, application/pdf. Maximum size: 25 MB.
DOCX to TXT converter
Extract plain text from Microsoft Word DOCX files and save as TXT online. Fast, free, no sign-up, no software needed.
Format: .docx, application/vnd.openxmlformats-officedocument.wordprocessingml.document. Maximum size: 25 MB.
DOCX to PDF converter
Convert Microsoft Word DOCX files to PDF online. Preserve layout and formatting. Free, no sign-up, works in your browser.
Format: .docx, application/vnd.openxmlformats-officedocument.wordprocessingml.document. Maximum size: 25 MB.
TXT to PDF converter
Convert plain text files to PDF online in seconds. Simple, fast, and free. No sign-up required. Download your PDF instantly.
Format: .txt, text/plain. Maximum size: 25 MB.
TXT to DOCX converter
Convert plain text TXT files to Microsoft Word DOCX format online. Free, instant conversion, no sign-up required.
Format: .txt, text/plain. Maximum size: 25 MB.
Data & encode
Color code converter
Convert color codes between HEX, RGB, and HSL instantly. Includes color picker for visual selection. Free online tool, no sign-up required.
JSON formatter & validator
Beautify or minify JSON with syntax highlighting and validation. Paste JSON and get formatted output instantly. Free online tool, no sign-up.
Format: .json, application/json. Maximum size: 5 MB.
CSV to JSON converter
Convert CSV files to JSON array format online. Handles headers automatically. Fast, free, runs in your browser. No sign-up required.
Format: .csv, text/csv, text/plain. Maximum size: 10 MB.
JSON to CSV converter
Convert JSON arrays to CSV format for spreadsheets online. Fast, free, runs in your browser. No account or sign-up needed.
Format: .json, application/json. Maximum size: 10 MB.
Base64 encoder
Encode text or files to Base64 format online. Useful for email attachments, data URIs, and API payloads. Free, no sign-up required.
Format: .txt, text/plain, application/octet-stream. Maximum size: 10 MB.
Base64 decoder
Decode Base64 strings back to plain text or binary instantly. Free online decoder, no sign-up, runs in your browser.
Format: .txt, text/plain. Maximum size: 10 MB.
SHA hash calculator
Calculate SHA-256, SHA-384, or SHA-512 hash for any text or file. Verify file integrity online. Free, no sign-up, runs in browser.
Format: .txt, text/plain, application/octet-stream. Maximum size: 50 MB.
URL encoder / decoder
Encode special characters to percent-encoding (%XX) or decode URL-encoded strings online. Instant, free, no sign-up. Works in your browser.
Format: .txt, text/plain. Maximum size: 5 MB.
Image
Convert
Length unit converter
Convert length units online: meters, feet, inches, centimeters, kilometers, miles, yards, millimeters. Instant result. Free, no sign-up.
Weight unit converter
Convert weight units online: kilograms, grams, pounds, ounces. Instant result. Free online unit converter, no sign-up required.
Date & time converter
Convert Unix timestamps to ISO 8601 dates and back. Supports seconds and milliseconds. Free online datetime converter, no sign-up.
Number base converter
Convert values between decimal, binary, octal, hexadecimal, string, number, and boolean. Free online data type converter, no sign-up.
Currency converter
Convert currencies using live exchange rates. Supports USD, KRW, EUR, JPY, GBP, and more. Free online currency converter, no sign-up.
Temperature converter
Convert temperature between Celsius (°C), Fahrenheit (°F), and Kelvin (K) instantly. Free online temperature converter, no sign-up.