Research toolbox

Citations & references 2

Citation converter

Convert references between GB/T 7714, APA, MLA, IEEE and moreOpen tool Reference checker

Extract DOIs and verify each against Crossref; flag dead and duplicate entriesOpen tool

Document conversion 2

Document converter

Convert between Word, Markdown and PDF; paste Markdown directly (PDF source requires sign-in)Open tool Table converter

Paste or upload a table; convert to LaTeX, Markdown, HTML or TSVOpen tool

PDF tools 3

Combine several PDFs into one, in order — locally, no uploadOpen tool Split PDF

Extract a page range, or split every N pages into filesOpen tool Organize PDF pages

Rotate, delete and reorder pages on thumbnails; add page numbers tooOpen tool

Images 6

Image compressor

Shrink figures and screenshots for submission; convert to JPG, PNG, WebPOpen tool Image Crop

Crop by any ratio or exact resolution, processed locallyOpen tool Image Watermark

Batch text watermarks, grid or tiledOpen tool Image Stitch

Stitch images into one PNGOpen tool Image OCR

Extract text from screenshots and scans into editable text, English or Chinese, right in your browserOpen tool HEIC to JPG

Batch-convert iPhone HEIC/HEIF photos to JPG, PNG or WebP, right in your browserOpen tool

Writing & text 2

Count characters, CJK chars, words and paragraphs, with a writing goal and .txt / .md uploadOpen tool Text diff

Compare two texts by character or line, removals red and additions greenOpen tool

Academic submission 2

LaTeX equation editor

Edit formulas visually with live preview; copy LaTeX or MathMLOpen tool Blind-review anonymizer

Redact author/affiliation/email from Word docs locally and wipe author metadata; nothing is uploadedOpen tool