Size of this PNG preview of this SVG file: 800 × 533 pixels. Other resolutions: 320 × 213 pixels | 640 × 427 pixels | 1,024 × 683 pixels | 1,280 × 853 pixels | 2,560 × 1,707 pixels.

Original file ‎(SVG file, nominally 900 × 600 pixels, file size: 161 bytes)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

DescriptionFlag of Thailand (Ayutthaya period).svg	English: Flag of Thailand from Ayutthaya period. Use as civil ensign until 1855, naval ensign until 1872. It is a red plain flag. ไทย: ธงแดงเกลี้ยง ธงชาติไทยแบบแรกสุดเท่าที่มีบันทึก ปรากฎหลักฐานครั้งแรกในสมัย สมเด็จพระนารายณ์มหาราช ใช้จนถึง พ.ศ. 2398
Date	1700
Source	Own work
Author	Xiengyod

Licensing

This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.

Heptagon

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Information

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	13:19, 30 March 2020	900 × 600 (161 bytes)	Sodacan	Optimized
	02:40, 28 July 2018	900 × 600 (267 bytes)	Paul 012	The 2017 standard colours were based on historical specimens, and probably best represent the historical colours.
	19:07, 14 May 2018	900 × 600 (267 bytes)	Sodacan	Modern colours should not apply to historical flags
	11:37, 14 February 2018	900 × 600 (267 bytes)	Paul 012	Used colours from 2017 Proclamation of the Office of the Prime Minister, with RGB values from https://www.nstda.or.th/th/nstda-knowledge/11557-thaiflag-color
	23:54, 15 March 2017	900 × 600 (267 bytes)	Zscout370	Code
	11:02, 6 July 2016	900 × 600 (2 KB)	Sodacan	Colour and size
	03:06, 12 July 2011	9,000 × 6,000 (263 bytes)	Fry1989	Reverted to version as of 20:03, 16 September 2008
	22:57, 8 July 2011	9,000 × 6,000 (263 bytes)	Paul 012	Colours from http://www.t-h-a-i-l-a-n-d.org/thaiflag/standard_color.html
	20:03, 16 September 2008	9,000 × 6,000 (263 bytes)	Fvasconcellos	simpler code
	16:18, 19 August 2007	9,000 × 6,000 (2 KB)	Xiengyod~commonswiki	{{Information \|Description={{en\| Flag of Thailand from Ayutthaya period to 1855. It is a red plain flag.}}{{th\|ธงแดงเกลี้ยง ธงชาติไทยแบบแรกสุดเท่า�