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Monitor EDID Reader and Decoder
Upload an EDID file or paste EDID HEX to inspect monitor identity, preferred timing, supported display modes, HDMI declarations, color information and extension blocks.
Your EDID is decoded locally in your browser. No EDID file is uploaded.
Browsers cannot directly read your monitor's raw EDID. Export the EDID from your operating system or display utility, then upload or paste it here.
Local EDID decoder
Decode Your Monitor EDID
Upload an EDID file
Choose or drop a binary or text EDID export. Supported file types: BIN, DAT, TXT and HEX.
Files are read with your browser and are never sent to the server. Maximum file size: 1 MB.Paste EDID HEX
Spaces, line breaks, tabs, commas, colons and 0x prefixes are accepted.
Choose a file, paste hexadecimal bytes or load the bundled sample to begin.
Decoded report
EDID Analysis Results
Monitor Information
Preferred Display Mode
Supported Resolutions and Refresh Rates
HDMI EDID Capabilities
Declared Color Information
Extension Blocks
Raw EDID bytes are grouped into 128-byte blocks and displayed as 16 bytes per row.
Export guide
How to Get EDID From a Monitor
Windows
A display-information utility can export the raw EDID as a BIN or text file. Utilities such as Custom Resolution Utility (CRU) or Monitor Asset Manager are third-party tools and are not affiliated with Yanxun Display. Advanced users can also inspect display records in the Windows Registry. Export the original bytes without rewriting them, then load the file above.
Linux
Connected display EDID files are commonly exposed under /sys/class/drm/. Choose the active connector and copy its binary EDID to a user-writable location.
cp /sys/class/drm/card0-HDMI-A-1/edid ~/monitor-edid.binmacOS
macOS does not provide a universal browser-accessible raw EDID export. System-profiler or display-diagnostic output may expose display information, while some specialist utilities can export EDID data. Confirm that the result contains raw EDID bytes before pasting it here.
After export: keep the original BIN file when possible. A valid base EDID block contains 128 bytes; additional extension blocks add another 128 bytes each.
Display identification
What Is Monitor EDID?
EDID, or Extended Display Identification Data, is a structured set of bytes that a display reports to a connected source. It can declare a manufacturer identifier, product code, serial information, physical size, preferred timing, other supported display modes and extension blocks. A computer or media source uses these declarations when it builds the list of available resolutions and refresh rates. EDID describes capabilities reported by the display; it does not measure panel performance, prove color-gamut coverage or guarantee that every declared mode will work through every cable, adapter or graphics device.
Interface capability data
What Is HDMI EDID?
HDMI uses EDID to learn which video and audio formats a connected display declares. A base EDID block may be followed by a CTA extension containing video identification codes, audio formats, colorimetry flags, HDR static-metadata declarations and vendor-specific data. An HDMI source can use this information to select a compatible output. The presence of an HDMI vendor block or a particular timing is a declaration, not proof of an HDMI version, cable bandwidth, certified HDR performance or the physical panel's maximum capability.
How Does HDMI Read EDID?
The display stores identification data and exposes it to the source over the display data channel. The source reads the EDID, evaluates the declared timings and formats, and then selects an output that the complete signal path can support.
1Source deviceComputer, console or media player
DDC / EDIDCapability exchange
2MonitorReports declared modes and features
Video + audioCompatible signal selected
3Displayed resultDepends on the complete signal path
HDMI EDID vs DisplayPort EDID
| Area | HDMI | DisplayPort |
|---|---|---|
| Identification data | EDID is normally read through the HDMI display data channel. | EDID can be transported through the DisplayPort auxiliary channel. |
| Common extensions | CTA extension data is common for HDMI video, audio and related declarations. | CTA and DisplayID structures may appear, depending on the display and implementation. |
| What EDID proves | Only what the display declares. It does not confirm cable capability, link training, GPU settings or actual panel performance. | |
Why Can Incorrect EDID Limit Monitor Refresh Rate?
An operating system usually offers modes derived from the display's EDID and from the capabilities of the graphics path. If a preferred timing or CTA timing is missing, corrupted or replaced by an adapter, the expected high-refresh mode may not appear. A fallback EDID can also expose only conservative modes such as 60 Hz. Cable bandwidth, port capability, GPU configuration and driver behavior can create similar symptoms, so EDID should be treated as one diagnostic input. After checking the declarations here, use the Refresh Rate Test to estimate the browser's current presentation rate.
Common questions
Monitor EDID FAQ
What is EDID in a monitor?
EDID is structured identification data reported by a display. It can declare manufacturer and product information, physical size, preferred timing, supported modes and extension blocks that a source uses during display configuration.
What is HDMI EDID?
HDMI EDID is the display-identification information an HDMI source reads from a connected display. CTA extension blocks may declare HDMI-related video, audio, colorimetry, HDR metadata and vendor-specific capabilities.
Can a website automatically read my monitor EDID?
No. Standard browser APIs do not expose the raw EDID. Export it with your operating system or a display utility, then upload or paste it here for local decoding.
Can EDID tell me my monitor's maximum refresh rate?
EDID can list declared timings and refresh rates, but it does not always describe every usable mode or prove the panel's true maximum. The cable, port, adapter, GPU, driver and operating-system configuration also matter.
Can EDID tell me whether my monitor is 99% sRGB or DCI-P3?
No. EDID may declare chromaticity coordinates or colorimetry support, but exact gamut coverage requires measurement with suitable calibration hardware. EDID alone cannot verify a 99% coverage claim.
Why does my 180Hz monitor only show 60Hz or 144Hz?
The expected timing may be absent from the active EDID, or the selected cable, port, adapter, GPU setting or driver may limit the link. Check the monitor input mode, operating-system settings and the complete signal path.
What is the difference between an EDID reader and an EDID emulator?
An EDID reader decodes data that already exists. An EDID emulator is hardware or software that stores, copies or presents EDID data to another device. This page is a reader and decoder; it does not emulate or rewrite EDID.
For distributors and brands
Testing Displays for an OEM Project?
Yanxun Display manufactures gaming and office monitors for OEM and wholesale projects. EDID timing tables, interface options, display identification and production configurations can be reviewed according to project requirements.