Sarah Chen
"The Data Whisperer"
Data Analyst & CSV Specialist
Sarah has spent over a decade wrangling spreadsheets, debugging CSV exports, and teaching teams how to make data work for them. She believes every dataset has a story — you just need the right tools to tell it. When she's not optimizing queries, you'll find her at hackathons or mentoring junior analysts.
39 tools by Sarah
CSV Viewer — Paste any CSV — comma, semicolon, tab, or pipe-delimited — and see it as a clean, scrollable table.
CSV Filter — Filter CSV rows by any column — contains, equals, regex match, numeric compare, empty / not-empty.
CSV Sort — Sort CSV rows by any column. Three modes: alphabetical, numeric, and natural (so 'a2' comes before 'a10').
CSV Column Extractor — Pick which columns to keep from a CSV. Output as CSV with any delimiter, or as a plain newline-separated list (one cell per line).
CSV Deduplicate — Remove duplicate rows from a CSV. Dedupe on the full row, or just on selected key columns (e.g. dedupe by email).
CSV Stats — Per-column statistics for any CSV — total count, non-empty, unique values, plus numeric min/max/mean/sum for any column with numbers.
DOCX to Text — Drop a .docx Word document and get back its plain text — no formatting, just the content. Runs entirely in your browser.
DOCX to HTML — Convert a .docx Word document to clean, semantic HTML — headings, bold/italic, lists, links, and tables are all preserved.
XLSX to CSV — Convert any Excel sheet to CSV — pick a delimiter, pick a sheet, or zip all sheets at once. Runs in your browser, no upload.
XLSX to JSON — Convert any Excel sheet to JSON — array of objects keyed by header row, or array of arrays with no header.
Excel Unlocker — Remove edit protections, sheet locks, and workbook structure restrictions from Excel files. Runs entirely in your browser using the XML...
DWG to DXF Converter — Convert AutoCAD drawings from binary DWG to plain-text DXF. Render layers, preview vector graphics on a blueprint canvas, and dow...
PDF to DWF Converter — Convert vector PDF drawings and schematics into Autodesk DWF (Design Web Format) packages. Adjust drawing DPI, sheet units, and d...
CSV to XLSX — Wrap a CSV file (or pasted CSV) into a single-sheet Excel .xlsx file. Pick the delimiter, sheet name, and output filename.
PPTX to Text — Extract visible text and speaker notes from a .pptx PowerPoint deck — slide by slide, with optional Slide N headers.
CSV Studio — Drop a CSV file (or load 100-row demo data) and explore it like a power tool: filter rows, sort by multiple columns, bulk-update cells, vis...
DOCX to PDF — Drop a .docx Word document and convert it to a clean, paginated PDF. Pick the page size, font size, and optional header/page numbers. Runs...
XLSX to PDF — Convert any Excel workbook to a PDF — each sheet renders as a landscape page with grid borders, scaled columns, and an optional bold heade...
PPTX to PDF — Drop a .pptx and convert it to a clean PDF — each slide becomes a 16:9 landscape page with a bold title and bullet body. Speaker notes opt...
Markdown to PDF — Paste Markdown, get a clean, paginated PDF — headings sized by level, bullet/numbered lists, blockquotes, code blocks with a light gre...
Convert HTML to PDF — open in a print preview for high-fidelity output, or download a smaller text-only PDF. Browser-based, no upload.
EPUB to Text — Drop an .epub file and extract the plain text of every chapter in spine order. Optional chapter headers. Useful for searching, summarizin...
EPUB to HTML — Drop an .epub and get all chapters merged into one clean HTML document — wrap as standalone, optionally strip inline styles and class nam...
Convert a CSV to SQL INSERT statements for MySQL, PostgreSQL, SQLite or MS SQL. Optional CREATE TABLE, multi-value INSERT mode.
JSON to CSV — Convert any JSON array (of objects or arrays) — or even a single object — into clean CSV. Tick the Flatten option to expand nested objects...
SVG to DXF Converter — Convert vector SVG graphics to CAD DXF format. Ideal for laser cutting, CNC pathing, and drafting import. Processed fully locally...
DXF Viewer & Ruler — View CAD drawing sheets in DXF format, toggle specific drawing layers, and measure vector lengths with an interactive canvas ruler....
EPUB Creator & Converter — Create standard EPUB books from Markdown chapters, plain text notes, or HTML. Configure covers, title sheets, and authors loc...
EPUB Studio — An all-in-one workstation to unpack EPUB ebooks, modify metadata fields, edit chapter contents, and export to TXT, MD, HTML, RTF, and PDF ...
EPUB Ebook Reader — An interactive, client-side EPUB viewer. Drop your ebook file to browse chapter Table of Contents, customize reading themes, and rea...
DXF to SVG Exporter — Load DXF drawings, toggle layer selections, and export isolated CAD components into clean, standalone, web-friendly vector SVG gra...
Convert TSV (tab-separated values) to JSON online. Use the first row as keys, auto-parse numbers and booleans, and copy the formatted output instantly.
Create and download a professional PDF invoice — add your business details, line items, tax and notes. All client-side, no upload.
Create a clean, printable PDF receipt in seconds. Add payment details, choose payment method, and download instantly — all client-side.
Build a professional resume with 3 templates (Classic, Modern, Minimal). Add experience, education, skills and download as PDF — 100% client-side.
Compute mean, median, mode, variance, standard deviation, quartiles, skewness, and kurtosis from your data instantly. No upload — runs in your browser.
Excel-like editable data table with sorting, filtering, add/delete rows and columns, and CSV/JSON export. Paste from Google Sheets or Excel. No upload — runs in your browser.
Create frequency distribution tables and histograms from your numbers. Adjustable bins, cumulative/relative frequency, and downloadable PNG/SVG histogram. No upload — runs in your browser.
Free online CSV data profiler — drag and drop a CSV file to get instant column-by-column statistics. Auto-detects data types (number, text, date, boolean), computes min/max/mean/median/std-dev, highlights outliers, and visualizes value distributions. Export profile as JSON. No data leaves your browser.
3 articles by Sarah
Build your freelance toolkit without spending a dime — invoicing, contracts, image editing, PDFs, and more. All browser-based, no signup required.
Convert CSV data to JSON instantly in your browser — no uploads, no signup, perfect for developers and data analysts.
Stop wasting time manually deduplicating lists, scrubbing empty lines, and fixing inconsistent case. These five free browser-based tools handle the grunt work so you can focus on what matters.