🎮 ROM DAT Filter

A single-file, offline HTML tool for searching, selecting, and exporting subsets of ROM entries from standard DAT files. Compatible with formats used by ClrMamePro, RomVault, Logiqx, and similar ROM management utilities.

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Features

• Drag & drop DAT loading — load any .dat or .xml file directly in the browser
• Live search — type 2+ characters to instantly filter across <game>, <machine>, and <software> nodes
• Manual curation — add and remove individual ROM entries from your output list
• Configurable output filename — set a console name and optional top-N number (e.g. top_100_nes.dat)
• Standards-compliant XML export — preserves the original DAT header and root element attributes
• Fully offline — all parsing and export happens client-side; no data ever leaves your machine
• Zero dependencies — pure HTML + CSS + JavaScript, no frameworks or build tools

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Usage

1. Open the tool

Open rom_dat_filter.html in any modern browser (Chrome, Firefox, Edge, Safari).

2. Load a DAT file

Drag a .dat or .xml file onto the drop zone, or click to browse.
The tool will parse the file and report how many ROM entries were found.

Supports Logiqx-style XML with <game>, <machine>, or <software> root elements.

3. Configure output filename (optional)

Field	Description	Example
Console name	Short identifier appended to the filename	nes, snes, megadrive
Top number	Numeric prefix for the filename	100 → top_100_nes.dat

If the top number is left empty, the filename will use top_x_<console>.dat.

4. Search and select ROMs

Type in the search box to find entries by name or description.
Click a result row (or the + ADD button) to add it to the export list.
Already-added entries are marked with a ✓ and cannot be added twice.

5. Download the filtered DAT

Once your list is ready, click ⬇ DOWNLOAD FILTERED DAT.
The exported file contains:

• The original root element with all its attributes intact
• The original <header> block (if present)
• Only the ROM entries you selected

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Released for personal use.