Text format checks
Catch extra spaces, repeated blank lines, list indentation issues, punctuation spacing, and paragraph structure problems.
무료 형식 검사기
텍스트, JSON, Word, Excel, 인쇄 파일 형식을 확인. Paste content, review common issues, and continue deeper checks in Kollab when the file needs more context.
Free onlineText and JSON previewWord / Excel / print checklistsBuilt for pre-submit checks
What can this format checker review?
Turn the broad search for check format into clear tasks for text, JSON, Word, Excel, and print-ready files.
JSON format checks
Validate whether JSON can be parsed and spot trailing commas, missing brackets, quote mistakes, and indentation problems.
Word format checklist
Review headings, fonts, line spacing, margins, tables, and references before submitting a Word document.
Excel format checklist
Check headers, dates, numbers, currency, blank rows, and CSV delimiter risks before sharing or importing a spreadsheet.
Print format checklist
Review paper size, margins, bleed, safe area, image resolution, and PDF export before sending files to print.
Send complex checks to Kollab
Use the page for a fast preview, then send complex documents, sheets, and print specs into Kollab for deeper review.
Format issue examples
Before and after examples make common formatting problems easier to recognize.
Text spacing
Heading Paragraph with spaces .
Heading Paragraph with spaces.
Clean trailing spaces, repeated blank lines, and spacing before punctuation.
JSON trailing comma
{ "tools": ["json", "word",] }{ "tools": ["json", "word"] }Standard JSON does not allow a comma after the last item.
Excel dates
2026/7/1, 07-02-2026, July 3
2026-07-01, 2026-07-02, 2026-07-03
Consistent dates reduce sorting and formula errors.
Print files
A4, no bleed, 96 dpi, JPG
A4, 3 mm bleed, 300 dpi, PDF
Print work usually needs bleed, high-resolution images, and PDF output.
How to check format
Run a quick browser check first, then move complex files into a full Kollab task.
01
Choose a format type
Select text, JSON, Word, Excel, or print depending on what you need to review.
02
Paste content or specs
Add the text, table excerpt, JSON, or file formatting requirements you want to check.
03
Review the issue list
See likely problems, formatting suggestions, and a cleaner preview where possible.
04
Continue in Kollab
Send complex files or full requirements to Kollab for a deeper review report.
When to use a format checker
Useful before submitting, importing, publishing, printing, or sending files to another team.
Before submitting reports
Check headings, paragraphs, lists, and references so the document feels polished.
Before importing JSON or API data
Confirm JSON is parsable and avoid errors caused by one comma, bracket, or quote.
Before sharing Excel reports
Standardize dates, amounts, headers, and blank rows so the recipient can filter and reuse the data.
Before printing materials
Check paper size, margins, bleed, and image clarity before sending files to print.
Format checker FAQ
What does check format mean?+
It usually means checking whether content or a file follows the expected structure and formatting rules. That can include text, JSON, Word, Excel, or print-ready files.
Can I check JSON format online?+
Yes. Paste JSON and the page will try to parse it, then flag common issues such as trailing commas, brackets, quotes, and indentation.
How do I check Word formatting?+
Use the Word checklist for headings, fonts, spacing, margins, tables, and references. Full documents can be sent into Kollab for deeper review.
How do I check Excel formatting?+
Review headers, dates, number and currency formats, blank rows, merged cells, and delimiter issues before sharing or importing.
What should I check before printing?+
Check paper size, margins, bleed, safe area, image resolution, color mode, and final PDF export.
Is this format checker free?+
The quick checks and checklists on this page are free to use. Complex file review can continue inside Kollab.
Before you submit,check the format.
Review text, JSON, Word, Excel, and print formatting from one practical hub.