HTML Table to CSV

No. Your HTML is never sent to our servers - all parsing, table extraction, CSV generation, copy, and download happen directly in your browser on your device using the built-in DOMParser API. The only network request the tool ever makes is the one you trigger explicitly with URL Import, which goes from your browser to the URL you enter.

Yes. The extractor measures the table grid in a first pass using each cell's colspan and rowspan attributes, then fills a 2D grid in a second pass. The top-left cell of a merged area holds the actual value, and the rest of the merged area is filled with empty strings so the resulting CSV is rectangular and column positions stay aligned.

The tool counts every <table> on the page during extraction. If more than one is found, a Table dropdown appears in the output toolbar so you can switch between them. Each selection re-extracts that table independently and updates the row/column count and live preview.

Yes - click URL Import, paste the page URL, and click Fetch. The browser issues a normal fetch() request to that URL, then the HTML is parsed locally. The target site must allow cross-origin requests via CORS headers - if it does not, you will see a network error. In that case, save the page as HTML in your browser and use Upload instead.

Yes. The extractor walks every <tr> in the table regardless of which section it lives in, so header rows, body rows, and footer rows all end up in the output CSV in source order. The first row in the CSV is whatever the first <tr> in the HTML is - usually the header row.

Both <th> and <td> are treated as plain cell values - their text content is extracted and trimmed. The CSV format itself has no concept of header cells, so the first row of the CSV is conventionally the header but is not marked specially.

Cell text is wrapped in double quotes and any embedded double quotes are escaped by doubling (") whenever the cell contains a comma, a double quote, or a newline. Cells without those characters are written bare. This follows the standard RFC 4180 CSV escaping rules so the output opens correctly in Excel, Google Sheets, LibreOffice Calc, and any CSV parser.

The tool is optimized for big tables. The full CSV output is always generated and available via Copy and Download, but the on-screen displays are capped: the CSV text preview is limited to the first 500 lines and the live HTML table preview is limited to the first 100 rows. This keeps the page responsive even on multi-megabyte HTML pages with tens of thousands of rows.

Yes. This tool intentionally does not save your HTML input, extracted CSV, or preview to your browser's local storage - storing large HTML pages on every keystroke would slow the tool down. Re-paste, re-upload, or re-fetch your HTML after a refresh.

The tool uses the browser's native DOMParser API (the same engine that renders web pages) to parse your HTML. This means malformed tags, missing closing tags, weird attribute quoting, and the messy real-world HTML you copy from a saved web page are all handled correctly without a third-party library.

After extraction, the tool counts every <table> element on the page. If more than one is found, a Table dropdown appears in the output toolbar showing "Table 1", "Table 2", and so on. Picking a different entry re-runs the extraction for that table index and updates the row/column count, CSV output, and live preview. The row stats line also shows the total table count next to the row/column numbers.

The extractor uses a two-pass grid algorithm. The first pass measures the table's true grid size by reading every cell's colspan and rowspan attributes. The second pass fills a 2D grid where the top-left of each merged cell holds the actual value and the rest of the merged area is filled with empty strings. The resulting CSV is rectangular - column positions stay aligned across rows even when the source HTML has heavy cell merging.

The extractor walks every <tr> in the selected table regardless of which sectioning element it lives inside. Header rows, body rows, and footer rows all end up in the output CSV in source order. The first <tr> is conventionally the header row but is not marked specially - the CSV format itself has no concept of header cells.

Each cell's text content is read with the standard textContent property and trimmed of leading and trailing whitespace before being written to the CSV. This strips the indentation and line breaks that pretty-printed HTML adds inside cells, so the resulting CSV doesn't carry stray spaces or newlines.

Cell values are wrapped in double quotes and any embedded double quotes are escaped by doubling (") whenever the cell contains a comma, a double quote, or a newline. Cells without those characters are written bare. This follows the standard RFC 4180 rules so the output opens cleanly in Excel, Google Sheets, LibreOffice Calc, Python's csv module, and any other CSV reader.

Four ways to load HTML data: type or paste straight into the textarea, click Upload to pick a .html / .htm / .txt file, drag a file onto the Input area, or click URL Import to reveal a URL field that calls fetch() directly from your browser to the target page with no proxy. URL Import requires the target server to allow cross-origin requests via CORS headers.

Below the CSV output, the tool renders a live preview of the extracted grid as an HTML table so you can verify the extraction visually. For very large tables the preview is limited to the first 100 rows so the browser does not have to lay out millions of DOM nodes - a notice next to the Preview label tells you how many rows the full table actually has. Copy and Download always operate on the full untruncated CSV.

The output panel shows the generated CSV in a read-only text area so you can read and inspect the data. For huge tables the displayed text is limited to the first 500 lines and a notice next to the Output label tells you the preview is limited. Copy and Download always work on the full output - the cap is purely a display safeguard to keep the page responsive when the generated CSV is megabytes long.

After extraction, a small status line in the output toolbar shows the number of rows and columns extracted, plus the total number of <table> elements found in the source HTML when more than one is present. This is useful for sanity-checking before you copy or download.

Click Copy CSV to copy the entire generated output to your clipboard via navigator.clipboard.writeText(). The button label briefly changes to "Copied!" for 1.5 seconds as confirmation, then reverts.

Click Download CSV to save the output as a table.csv file. The blob is created locally on your device and the temporary object URL is released after the download is triggered.

This tool intentionally does not save your HTML input, generated CSV, or preview to your browser's local storage. Storing large HTML pages on every keystroke is exactly what makes other tools freeze - skipping persistence keeps this one snappy even on multi-megabyte pages with tens of thousands of rows. Re-paste, re-upload, or re-fetch your HTML after a refresh.

Click Clear to wipe the input textarea, the generated CSV, the live preview, the table count and selection, the URL Import bar, and any error message in a single action.