Ingredient and Allergen Label Printer for Food Sellers

Ingredient and Allergen Label Printer is an offline app (one HTML file in a zip). You keep each product's ingredients, the allergen words you want emphasised, the net weight, the storage line and the shelf life. Pick a product and a made date, and the app prints sticker labels with the ingredients, the allergen words in bold, a Contains line, the dates and a batch code, or saves a PDF at exact size.

The problem it removes: Food labels are retyped for every batch, the date arithmetic is done in your head, the allergen words are bolded by hand and sometimes missed, and last month's ingredients end up on this month's jar. This app keeps the wording of each product in one place, applies your allergen marking the same way on every label, and warns when an allergen word you listed does not appear in the ingredients.

What is inside:

• Product list with ingredients, allergen words, net weight, storage line, made in line, shelf life and batch prefix
• Allergen words you type are shown in bold in the ingredients, and added to a Contains line
• Words you wrap in asterisks in the ingredients are bold too
• Made date, best before or use by date worked out from the shelf life, and a batch code from the date
• Batch log of what you printed, with days left to the date
• Six common A4 sticker sheet grids you can edit, with a test page and offset calibration
• Warnings when text does not fit, shrinks too small, or an allergen word is not found in the ingredients
• Print through the browser or download a PDF at exact page size
• Example data you can load in one click, a Start here guide and an Honest limits panel
• JSON backup and restore, CSV export, and CSV import with a check of every row before anything is added

Who it is for: home kitchens, small bakeries, caterers, market stalls and shops that make their own food and print their own labels on sticker sheets.

What it is NOT: It is not a labelling rulebook and not an allergen database. It does not know what is in your food: the ingredients and the allergen words are what you type, and it makes no claim that a label meets any food labelling law or inspection. Check the labelling rules that apply to you with the authority that applies to you. It does not work out nutrition values. The PDF file holds Latin letters only: Arabic text prints through the browser's own Print and Save as PDF. It is not legal, tax or accounting advice, it is not connected to any government system, bank or messaging service, and it does not file or send anything by itself. UAE e-invoicing is not part of it.

Your data stays on this device in your browser. Back it up with Export; clearing browser data loses it otherwise.

Verified by us: scripted tests in Chromium (129 checks through the real screens: adding, editing and deleting records in every table, required-field messages, backup then clear then restore, CSV export then import, keyboard order, print layouts rendered to PDF, no horizontal scrolling at 375 and 1280 pixels, no network requests) and an independent recalculation by a separately written Python evaluator of 532 calculated values (25 randomised rows plus the example data) with 0 mismatches. Safari engine (WebKit): smoke test passed; Firefox: could not be launched. Not tested: Firefox beyond what is stated here, and no real printer was used (print layouts were checked as PDF).