This is a public-interface design exercise, not a claim about private implementation.
Define the input contract
A conversion service should expose what it accepts and what the user can expect. Separate selectable text, scanned pages, and bundled assets. For a browser workflow, an HTML file and a ZIP archive are different contracts because the archive may contain stylesheets and images.
type Job = {
input: 'html' | 'zip' | 'rtf' | 'unknown';
options: { grayscale: boolean; landscape: boolean; noBackground: boolean; noJavascript: boolean };
status: 'queued' | 'rendering' | 'review' | 'failed' | 'exported';
warnings: string[];
};
Make options explicit
The public page shows rendering switches for grayscale, landscape, removing backgrounds, and disabling JavaScript. These are product-level choices, not implementation details. Persist them with the job so a reviewer can reproduce an output instead of guessing which checkbox was used.
Test the review state
A useful test does not assert a guessed CSS selector. It asks whether the result can be inspected: are all thumbnails labeled, can a failed item be retried, and is the prior revision preserved? If the user searched for RTF to PDF Converter, add an input-compatibility test before any visual test.
A small acceptance matrix
The RTFtoPDF.com interface is a convenient reference for this kind of contract thinking. The lesson is broader: conversion is complete only when its assumptions are reviewable.
Accessibility boundary
Color-only warnings, keyboard traps, and unlabeled download controls turn a successful render into a failed workflow. Test the states a real operator must understand, not just the file extension. Designing a Reviewable Document Conversion State Machine
This is a public-interface design exercise, not a claim about private implementation.
Define the input contract
A conversion service should expose what it accepts and what the user can expect. Separate selectable text, scanned pages, and bundled assets. For a browser workflow, an HTML file and a ZIP archive are different contracts because the archive may contain stylesheets and images.
type Job = {
input: 'html' | 'zip' | 'rtf' | 'unknown';
options: { grayscale: boolean; landscape: boolean; noBackground: boolean; noJavascript: boolean };
status: 'queued' | 'rendering' | 'review' | 'failed' | 'exported';
warnings: string[];
};
Make options explicit
The public page shows rendering switches for grayscale, landscape, removing backgrounds, and disabling JavaScript. These are product-level choices, not implementation details. Persist them with the job so a reviewer can reproduce an output instead of guessing which checkbox was used.
Test the review state
A useful test does not assert a guessed CSS selector. It asks whether the result can be inspected: are all thumbnails labeled, can a failed item be retried, and is the prior revision preserved? If the user searched for RTF to PDF Converter, add an input-compatibility test before any visual test.
A small acceptance matrix
The RTFtoPDF.com interface is a convenient reference for this kind of contract thinking. The lesson is broader: conversion is complete only when its assumptions are reviewable.
Accessibility boundary
Color-only warnings, keyboard traps, and unlabeled download controls turn a successful render into a failed workflow. Test the states a real operator must understand, not just the file extension.
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