DOFIW · WEB ACCESSIBILITY MADE PRACTICAL

Check One Pattern. Understand the Result. Improve the Page.

Free browser-based tools and original English guides for people who want to make website colors, structure, content, and captions easier to perceive and understand.

Explore accessibility toolsRead accessibility articles
10Focused browser-based tools
10Original supporting articles
0External APIs required by the tools
1Shared goal: informed repairs

Start with the problem in front of you

DOFIW is organized by decisions, not by a long audit checklist. Choose the area that matches your current task, complete the focused check, and move to broader testing only after you understand the finding.

Choose readable colors

Measure one pair, review a palette, or find a related shade that reaches the intended text threshold.

Check a color palette

Inspect HTML relationships

Review headings, labels, links, image alternatives, and data-table structure that styling can hide.

Check heading structure

Make content clearer

Use plain-language signals and contextual guidance to improve English instructions, explanations, and choices.

Check content readability

Review caption timing

Calculate a cue’s reading rate, then balance the number with accuracy, synchronization, lines, and placement.

Calculate caption speed

FOCUSED TOOLS

Use a tool when you need evidence, not a verdict

A contrast ratio, heading outline, missing attribute, or reading-speed calculation can expose a specific problem. It cannot determine whether the complete page is understandable, operable, legally compliant, or usable by every person.

Each DOFIW tool therefore pairs its output with an interpretation, repair prompts, use cases, limitations, and a clear statement about local data processing.

View all 10 tools
Color Contrast CheckerCalculate and interpret one foreground-background ratio.Heading Structure CheckerRead a page outline without relying on visual size.Alt Attribute CheckerInventory image alternatives that need contextual review.Readability and Plain Language CheckerLocate dense English passages without treating a score as proof.

Move from a signal to an informed decision

The strongest workflow combines a focused result with subject-specific knowledge and a test of the final experience.

Featured accessibility reading

These three articles introduce the reasoning used throughout DOFIW: apply the correct threshold, preserve meaning during repair, and distinguish an automated measurement from human understanding.

COLOR FOUNDATIONS

WCAG Color Contrast Explained

Learn when 3:1, 4.5:1, and 7:1 apply, how large text is defined, and why a borderline number cannot be rounded into a pass.

Read the contrast article
CONTENT DECISIONS

How to Write Alt Text for Images

Choose an alternative from the image’s purpose in its current context, including decoration, links, text, charts, and WordPress reuse.

Read the alt text article
UNDERSTANDABLE WRITING

Improve Readability with Plain Language

Put the reader’s task first, keep necessary precision, and use readability metrics as signals rather than universal quality scores.

Read the plain-language article

Browse the complete article library

What makes a DOFIW resource useful

The site is built around a narrow promise: provide enough evidence and explanation to support a responsible next step without pretending that one tool can audit everything.

One clearly defined taskEach tool or article addresses a specific question rather than combining unrelated checks into a vague score.
Interpretation before recommendationA result explains the relationship being measured before suggesting what might change.
Original, topic-specific writingExamples, limitations, and questions are written for the subject instead of copied from a repeated content template.
Limits stated openlyAutomated output is separated from decisions that require context, assistive technology, or representative users.
Primary guidance linkedTechnical articles point readers toward relevant W3C and other authoritative sources for verification.
Privacy by simple designTools avoid accounts and external APIs and explain how entered values are handled.

Your test content stays in the browser

DOFIW tools are designed to calculate entered colors, HTML, text, and caption timing locally without sending the supplied content to an external API. Each tool describes its own processing and clipboard behavior.

LOCAL
PROCESSING

Built for people making real website decisions

You do not need to be an accessibility specialist to begin, but you should be willing to investigate context and verify the completed experience.

WordPress site ownersCheck custom HTML and content while remembering that the active theme can change the final output.
Content editorsImprove headings, links, alternatives, instructions, terminology, and media text.
DesignersTurn brand colors into documented functional relationships instead of isolated swatches.
Front-end developersInspect semantic patterns and use generated examples as a tested starting point.

Frequently asked questions

Are the tools free to use?

Yes. The current DOFIW tools are designed for direct browser use without registration or a paid API.

Does DOFIW scan a complete live website?

No. The tools focus on values, markup, text, or timing data you provide. This keeps each result explainable and does not replace a complete live-site audit.

Can a passing result prove WCAG conformance?

No. WCAG conformance applies to the complete page or process. Focused automated checks must be combined with contextual, keyboard, assistive-technology, and human testing.

Where should a beginner start?

Start with the exact problem you can observe. For example, check one color pair, inspect a page outline, or review one form. Read the linked article before making a broader design rule.

Are the articles legal advice?

No. They provide educational and technical information. Legal requirements vary by jurisdiction, organization, contract, and product.

Why do the tools explain their limitations?

Because an accurate number can still be misapplied. Clear limitations help distinguish what the tool measured from what a person must still evaluate.

Choose your next step

Use the tools when you have a focused question. Use the article library when you need the reasoning, examples, and judgment behind a repair.

Open the tools directoryExplore the article library

DOFIW provides educational guidance and focused technical tools. It does not provide legal advice, certification, or a guarantee of WCAG conformance.