Bulgarian spelling and grammar checker, seventeen rules explained in plain language
This tool checks text written in Bulgarian, not English. Paste a Bulgarian sentence or article and it returns every spelling, punctuation and grammar issue it finds, the rule that was broken, why it is wrong, and the exact correction, covering seventeen checks from the Bulgarian long definite article to Latin letters hidden inside Cyrillic words.
Open the Bulgarian text checker A free account opens this tool. Text is checked entirely offline in your browser and nothing you type is sent anywhere.How it works
Three steps, and the browser does the checking, no text ever leaves it.
Paste or write Bulgarian text into the box
Use your own text, or load the built-in example, which is constructed to trigger every rule category at least once, including the homoglyph check, on purpose.
Read each finding, the rule and the explanation
Every result shows exactly where in the text the issue sits, which of the seventeen rules it breaks, why that is a mistake in Bulgarian, and a specific corrected form, not just a red underline.
Rewrite the correction by hand and check the metrics
Typing the fix yourself, after reading why it was wrong, is the point of the tool. The sentence length, vocabulary diversity and readability figures below give a second, separate view of the text as a whole.
Seventeen checks across thirteen categories
From the long definite article to Latin letters hidden inside Cyrillic words.
Built to explain the rule, not just flag the word
A student who only sees a red underline learns nothing. A student who reads why it is wrong might stop making the mistake.
The long definite article explained the way it is taught in school
If the word can be replaced with toy, meaning he, it takes the long article, the subject form. If it can be replaced with nego, meaning him, it takes the short article, the object form. A long article straight after a preposition is always wrong, because a preposition never governs a subject, and the built-in dictionary covers 66 masculine nouns with their real long and short forms.
Ninety eight tests across two independent files
One file tests each function on its own with hand-picked examples, including edge cases. The other walks the full catalogue of seventeen rules and checks that every correct example passes clean and every incorrect example is actually caught. All of them pass, and the pairs of examples shown to students are the same ones the tests run against.
Four readability metrics, marked as estimates, not a verdict
Average sentence length, an estimate of passive voice by suffix, vocabulary diversity as a percentage of unique words, and a readability index adapted to counting vowels in Bulgarian words rather than English syllables. All four are shown labelled as heuristic estimates in the interface, not a scientifically validated measure, because that honesty matters more to a teacher than a confident-looking number.
A dictionary of homoglyphs that ordinary spellcheck misses
Text copied from an English source or a badly encoded document can end up with a Latin a, e, o, p, c or x sitting inside a Cyrillic word, visually identical but a different character underneath. Ordinary search and spellcheck do not catch this. The tool does, because it compares character codes, not appearance.
Frequently asked questions
Does this tool check English text?
No. It checks text written in Bulgarian, spelling, punctuation and grammar rules that are specific to the Bulgarian language, such as the long and short definite article and numeral agreement, none of which exist in English. Paste Bulgarian text into it, not English.
What is the long definite article it keeps mentioning?
Bulgarian nouns carry two different definite article endings depending on grammatical role. A masculine singular noun used as the subject of a sentence gets the long form, for example gradat, meaning the town, doing something. The same noun used as an object gets the short form, grada. English does not have this distinction at all, which is exactly why it is one of the most common mistakes Bulgarian students make, and the classroom rule is to test whether the word can be replaced with toy, meaning he, or nego, meaning him.
Is the text sent anywhere for checking?
No. All dictionaries and rules are built into the page and run entirely in your browser. Nothing you paste or type is transmitted anywhere, which also means the analysis is instant and works without an internet connection once the page has loaded.
Does the tool correct the text automatically?
No, and that is deliberate. It returns a list of findings, each with the exact position in the text, the rule broken, an explanation of why, and a suggested fix, but the student has to read the explanation and retype the correction by hand. The point is understanding the rule, not producing a clean document without learning anything.
How reliable is the readability score?
Treat it as a rough estimate, not a scientific measurement. It is adapted to count vowels in Bulgarian words rather than English syllables, and the interface says so explicitly. It is useful for noticing that one text is denser than another, not for grading a specific piece of writing to a decimal point.
Can a teacher use this for a whole class rather than one student at a time?
Yes. Each of the seventeen rules ships with a matched correct and incorrect example, so a teacher can put the incorrect one on the board, ask the class why it is wrong, then check that the corrected version passes. A teacher can also ask students to keep a log of which rule names come up most often for them, which tends to show where a class needs a proper lesson rather than a one-off correction.
Other tools
Part of the EduFacturing tool set for text and documents.
The rest of the tool set
A free account opens the full set: Bulgarian text checking, document conversion, OCR and the rest, for teaching and writing alike.
Create a free accountFree account. No card, no trial period.