Check JSON syntax, structure, and potential risks in real time. Includes error navigation, warnings, statistics, and exportable validation reports, all processed locally with no login required.
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Input ng JSON
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Validation Results
Simulan ang JSON validation
Maglagay ng JSON data para makita ang results
Paano mag-validate ng JSON online – step-by-step guide
1Hakbang 1 – I-paste o i-import ang JSON sa validator2Hakbang 2 – Suriin ang validation results3Hakbang 3 – Ayusin ang errors at i-validate muli4Hakbang 4 – I-export ang validation report
Gamitin ang online JSON validator na ito para i-check ang syntax, structure, at data integrity nang real-time, kasama ang errors, warnings, at statistics.
Find the problem before guessing at the fix
The validator does more than say invalid - it shows what broke and where
A lot of JSON does not just look messy; it is actually unparseable. The validator is useful because it tells you where the JSON breaks, what kind of issue it is, and whether there are broader structural risks that matter downstream.
JSON to validate
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{
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"orderId":"SO-1024"
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"items":[
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{
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"sku":"A-1",
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"qty":2,
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}
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]
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}
Validation feedback
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Error 1
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Line 3, Column 3: Expected "," or "}"
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.
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Error 2
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Line 7, Column 5: Trailing comma is not allowed
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.
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Statistics
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Objects:2
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Arrays:1
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Max Depth:3
When there are multiple errors in the same payload, scan the full list first, then decide whether to fix it manually or send it to Repair JSON.
3 validator examples that match real work
These examples cover the most common validation scenarios in development, testing, and operations: API responses, configuration files, and log payloads.
API Debugging
Catch a missing comma in an API response immediately
Useful during API debugging, webhook testing, and response inspection when you need to know whether the backend returned malformed JSON or the payload was copied incorrectly.
Invalid JSON (kulang ang comma)
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{
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"user":{
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"id":42,
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"name":"Maeve"
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}
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"roles":["admin","editor"]
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}
Validation Results
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Error
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Line 6, Column 3: Expected "," or "}"
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.
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Suggestion
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Add a comma after the "user" object
This is exactly the kind of issue the validator handles best: mostly-correct JSON with one local syntax break.
Configuration
Spot trailing commas and comments before a deploy fails
A common problem is treating JavaScript object syntax as if it were valid JSON. The validator helps separate what JS allows from what strict JSON actually accepts.
Invalid JSON (kulang ang comma)
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{
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"env":"prod",
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"retry":3, // retry count
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"features":{
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"betaCheckout":false,
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}
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}
Validation Results
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Error
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Line 3, Column 15: Comments are not allowed in JSON
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Line 6, Column 3: Trailing comma is not allowed
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.
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Result
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Remove the comment and trailing comma
Running config through the validator before release is usually faster than debugging config failures in production.
Log Review
Use warnings and stats to catch structural risk even when JSON is valid
Some payloads parse successfully but are still risky because of depth, field shape, or payload size. Warnings and statistics help expose that early.
Invalid JSON (kulang ang comma)
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{
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"event":"audit",
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"payload":{
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"meta":{
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"trace":{
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"deep":{
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"nested":{
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"value":"..."
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}
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}
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}
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}
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}
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}
Validation Results
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Validation Result
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OK - JSON is valid
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.
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Warning
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Payload depth is high and may be harder to transform or inspect downstream
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.
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Statistics
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Objects:6
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Max Depth:6
Even when JSON is valid, warnings and stats can tell you that downstream processing will be more expensive.
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Tutorial Step
Hakbang 1 – I-paste o i-import ang JSON sa validator
Start by putting the raw JSON into the input editor. You do not need to clean it up first. One of the main benefits of the validator is catching syntax problems early instead of discovering them only after you send the data to an API or save it as configuration.
I-paste ang JSON sa kaliwang editor, o gamitin ang Import para mag-load mula sa file, URL, o clipboard.
Awtomatikong tumatakbo ang validation habang nagta-type ka, parang live JSON linter.
Gumamit ng totoong API responses, config files, o log snippets para maagang mahuli ang issues.
Single-line JSON is fine. Monaco diagnostics and structural statistics still work without pre-formatting the input.
Validation updates as you type, so the page also works well as a lightweight live JSON linter.
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Tutorial Step
Hakbang 2 – Suriin ang validation results
Most people only look at the first error message, but the faster approach is to read the errors panel, warnings panel, and statistics together. Errors tell you what is already broken, warnings tell you what may break later, and statistics tell you how complex the payload really is.
Tingnan ang Errors list para sa parse issues tulad ng kulang na comma, hindi naisara na brackets, o invalid escape sequences.
Suriin ang Warnings para sa deep nesting, sobrang laking strings, o kahina-hinalang patterns.
Gamitin ang Statistics para makita ang object/array counts, maximum depth, at overall size.
When a JSON file has multiple issues, do not stop after the first one. Scan the full list first so you can tell whether the problems are isolated or systemic.
If you need to hand the problem off to someone else, the report plus the diagnostics is much more useful than a screenshot alone.
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Tutorial Step
Hakbang 3 – Ayusin ang errors at i-validate muli
The goal here is not to delete characters blindly. Use the location and context around each error to understand why the JSON broke. Most invalid JSON falls into a small set of patterns: missing commas, single quotes, comments, trailing commas, unmatched brackets, or nested JSON strings that need another pass.
I-click ang anumang error o warning para tumalon sa eksaktong line at column.
Karaniwang ayos: magdagdag ng kulang na comma, isara ang braces/brackets, i-escape ang special characters, o alisin ang trailing commas.
Kung sobrang sira ang JSON, buksan ito sa Repair JSON tool para i-auto-fix ang common syntax issues.
When the file is heavily damaged or the error list is long, move to Repair JSON and let it fix common syntax issues before coming back for validation.
After the payload passes validation, scan the warnings and statistics again so you do not miss structural risks that survived syntax repair.
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Tutorial Step
Hakbang 4 – I-export ang validation report
Once the JSON is valid, it is ready for the rest of your workflow. Export a validation report if you need traceability, then move to the formatter, compare tool, schema generator, or table editor based on what you need next.
I-click ang Report para i-download ang JSON report na may lahat ng errors, warnings, at statistics.
I-share ang report sa team para sa debugging, code reviews, o API contract checks.
Kasama sa report ang line numbers, messages, at high-level recommendations.
If you want to generate a schema, types, or review data in a table, validated JSON is a much more stable starting point.
Putting the validator at the beginning of the workflow usually saves rework later when debugging APIs, editing configs, or generating code.
A more reliable validator workflow
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Paste the rawest version of the JSON into the validator instead of pre-editing it first.
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Read the errors, warnings, and statistics together so you understand both syntax failures and structural risk.
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Fix small issues in place, but switch to Repair JSON when the payload is heavily damaged or the error list is long.
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Once the payload is valid, move it to the formatter, compare tool, or schema generator for the next stage of work.
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If you need to collaborate, export the report instead of sending screenshots so others can reproduce the problem faster.
Placing the validator at the start of your JSON workflow usually surfaces most downstream problems early, especially during API debugging, config review, and log analysis.
Mabilis na tips para sa beginners
Karamihan sa invalid JSON ay dahil sa kulang na comma, trailing comma, o paggamit ng single quotes imbes na double quotes.
Kung may lumabas na JSON parse error, magsimula sa line at column na nasa message.
I-validate ang JSON bago ipadala sa APIs o i-save sa database para maiwasan ang runtime errors at broken payloads.
Before sending JSON to Repair, Compare, or Schema tools, a validation pass usually gives you a cleaner start.
Mga kaugnay na tools para sa JSON validation at formatting
Pagsamahin ang mga tools na ito sa validation para mapabuti ang data quality at mapadali ang JSON workflows.
Sinusuri ng JSON validation kung tama ang syntax at kung consistent ang structure, at nagbibigay din ng statistics tulad ng type count, nesting depth, at laki ng payload.
Anong mga error ang makikita ko?
Karaniwang error ang kulang na comma, hindi naisara na braces/brackets, invalid na escape sequence, trailing comma, at malformed na string.
Para saan ang mga warning?
Itinatampok ng mga warning ang posibleng risk tulad ng sobrang lalim na nesting, napakahahabang string, o hindi pangkaraniwang pattern—maaaring magdulot ito ng problema kahit valid ang JSON.
Pwede ba akong mag-download ng validation report?
Oo. Gamitin ang Report para mag-download ng JSON validation report na may errors, warnings, at statistics.
What is the difference between JSON validation and JSON repair?
Validation is for finding and explaining what is wrong, with precise locations and diagnostics. Repair is for automatically fixing common syntax problems. Use the validator when you want clarity; use repair when the JSON is too broken to fix efficiently by hand.
Can it handle large JSON files?
Yes. Typical API responses, config files, log snapshots, and medium-to-large JSON payloads work well. Larger payloads may take longer to analyze, but everything still runs locally in the browser.
Is my JSON uploaded anywhere?
No. Validation, diagnostics, and report generation all happen locally in your browser, which makes this page suitable for internal data, config values, and sensitive log payloads.
