Free tools for students and researchers
No signup. No AI. No servers. Everything runs entirely in your browser. Part of the LetX ecosystem.
Word counter
Count words, characters, sentences. Reading time, keyword density.
PDF merge & split
Combine multiple PDFs or extract pages. 100% in your browser.
Readability checker
Flesch-Kincaid, Gunning Fog, SMOG, and 3 more algorithms.
Text case converter
UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
GPA calculator
Weighted GPA from letter grades and credit hours. Cumulative support.
LaTeX table generator
Paste CSV or fill a grid — get LaTeX table code instantly.
Statistics calculator
Mean, median, mode, std dev, quartiles, variance from any numbers.
Text diff checker
Compare two texts side by side. Word-level change highlighting.
Image to PDF
Convert JPG, PNG, or WEBP images to a PDF. Reorder, resize, download.
Markdown → LaTeX
Convert Markdown documents to LaTeX. Open result in LetX editor.
Need AI-powered tools?
Check out the full LetX suite — AI PDF summarizer, intelligent paraphraser, automated citation generator, abstract generator, and more.
Explore all LetX tools →