How did Indonesia become the biggest Muslim country? — credits

No foreign army conquered the islands that are now Indonesia: historians describe Islam arriving mainly with Muslim merchants on the monsoon routes and spreading through their honest dealing, marriage, teachers, and rulers such as Malacca's, whom most of his people followed, port by port over about three centuries. The reel ends with the Prophet's ﷺ words "I was only sent to perfect righteous character" (Musnad Ahmad 8952). A hand-made-style paper-collage animation, rendered live in your browser with plain JavaScript and canvas.

Sources for the story

Musnad Ahmad 8952 (narrated by Abu Hurayrah; graded sahih by Shu'ayb al-Arna'ut, Takhrij al-Musnad 14/513; Ibn 'Abd al-Barr, al-Tamhid 16/275): the Prophet ﷺ said, “I was only sent to perfect righteous character.” Also in al-Bukhari, al-Adab al-Mufrad 273.
Majallat Jami'at Umm al-Qura 2/348–353: Muslim merchants from Arabia and India; their character in buying, selling and dealing drew the islanders' attention to Islam; marriage formed Muslim households along the coasts; teachers.
al-'Usayri, Mujaz al-Tarikh al-Islami 1/299–301, 1/416: regions the conquerors never reached; the spread was gradual; in Malacca a ruler embraced Islam and most of his people followed.
al-Tantawi, Dhikrayat 6/236–267: the merchants came to trade; Islam spread step by step, port by port.
Majallat al-Risala 987/16: Islam came to the islands by peaceful merchants, not by sword or spear; the Samudra Pasai king who died in 1297.
Britannica, “Samudra-Pasai”: the royal tombstone dated 1297, the earliest securely dated Muslim ruler in the archipelago.
Asia Society chronology and Ricklefs (via the Wikipedia article “Spread of Islam in Indonesia”): Java's north-coast ports such as Gresik and Maluku's Ternate in the 15th century; Makassar 1605 (about three centuries after Pasai).
Pew Research Center (2025): Indonesia has the world's largest Muslim population.
Rihlat Ibn Battuta 4/109–114: the wooden-walled port of Samudra Pasai, its boats, tin and gold (used only for the pictures, not narrated).
Qaf's answer on the phone screen is a real, unedited excerpt (cropped) of Qaf's answer to the same question.

Out of respect, the Prophet ﷺ is never depicted, and people are shown only from behind. The spread of Islam in the archipelago was mainly peaceful; no foreign Muslim army conquered it, though later sultanates there did fight wars.

Made with

Narration: Google Gemini 3.8 Flash TTS (voice “Algieba”), directed and edited for this film.
Illustrations: Google Gemini 3.1 Flash Image (backgrounds) and OpenAI GPT Image 2.5 (cut-outs), art-directed and reviewed frame by frame.
Typefaces (SIL Open Font License): Caveat Brush, Caveat, Patrick Hand, Aref Ruqaa.
Animation engine, sound design and mix: written for this series.

Sound

No music is used. All sound effects are CC0 unless noted.

amb_harbour_stilts — #438839 "G54-04-Pier Lap.wav" by craigsmith, CC0 1.0; #438850 "G54-31-Water Lapping.wav" by craigsmith, CC0 1.0; #214676 "Tropical Birds.wav" by dubminister, CC0 1.0; #191497 "Creaking pier" by morosopher, CC0 1.0. Edits: designed bed: #438839 cut 20-62 s (HPF 80 Hz, LPF 9 kHz, panned L) + #438850 cut 24-66 s (HPF 70 Hz, LPF 8 kHz, panned R, -7 dB) + #214676 cut 70-112 s (HPF 1.2 kHz so only distant birds remain, +5 dB) + two pier creaks from #191497 (0.00-0.95 s and 6.60-7.45 s, HPF 220 Hz) placed at 9.0 s and 27.5 s; 40 s seamless loop (2 s crossfade), -26 LUFS
amb_open_sea_rigging — #371172 "Sailboat, cockpit at 12kn wind speed" by borralbi, CC0 1.0; #195193 "LargeWoodenShip.mp3" by PimFeijen, CC0 1.0; #852108 "Sailboat Bow" by myLoop, CC0 1.0. Edits: layered: cockpit hull wash + wind 24-58 s (HPF 40 Hz, 0 dB) + wooden creaks 10-44 s (HPF 60 Hz, -21 dB) + bow splash/wind 40-74 s (HPF 80 Hz, -24 dB); 30 s seamless loop (2 s crossfade), -24 LUFS. Made for how-islam-spread
amb_tropic_breeze_gust — #714265 "gusts in a tree" by bruno.auzet, CC0 1.0. Edits: cut 82.0-92.0 s (one gust swell); HPF 110 Hz, LPF 12 kHz; 0.8 s fade-in, 1.6 s fade-out; -24 LUFS (one-shot, not a loop)
sfx_blind_click — #635786 "window residential slide open close click latch various" by kyles, CC0 1.0. Edits: cut 1.38-1.66 s (one latch click); HPF 120 Hz; trim, fades, peak -1 dBFS
sfx_blind_unroll — #532775 "roller shade up.mp3" by twinpix, CC0 1.0. Edits: full 0.00-1.05 s; HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_card_fold — #364740 "open-cardboard-box-compartment.wav" by newagesoup, CC0 1.0. Edits: cut 0.12-0.95 s (quick cardboard flap fold); HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_ceramic_clink_soft — #568758 "Cup and Saucer 2.wav" by bowlingballout, CC0 1.0. Edits: cut 0.08-0.70 s; HPF 100 Hz; trim, fades, peak -1 dBFS
sfx_cloth_drop — #844390 "Cloth flaps" by Maraboop, CC0 1.0. Edits: cut 0.02-0.72 s (soft double flap); HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_cloth_flap — #391945 "cloth flap" by ssierra1202, CC0 1.0. Edits: cut 0.00-0.74 s; HPF 60 Hz; trim, fades, peak -1 dBFS
sfx_cloth_swish_1 — #391448 "Shirt Whoosh 1.wav" by saturdaysoundguy, CC0 1.0. Edits: cut 6.70-7.40 s; HPF 80 Hz,FFT denoise 10 dB (floor -72); trim, fades, peak -1 dBFS
sfx_cloth_swish_2 — #391448 "Shirt Whoosh 1.wav" by saturdaysoundguy, CC0 1.0. Edits: cut 9.60-10.30 s; HPF 80 Hz,FFT denoise 10 dB (floor -72); trim, fades, peak -1 dBFS
sfx_cloth_swish_3 — #320144 "Blanket Movement 6" by OwlStorm, CC0 1.0. Edits: cut 0.00-1.16 s; HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_cloves_pour — #264123 "Pouring rice on a clay pot" by kessir, CC0 1.0. Edits: cut 16.35-18.20 s (rice poured onto clay); HPF 150 Hz; trim, 40 ms fade-in, 0.4 s fade-out, peak -1 dBFS
sfx_cloves_sweep — #802724 "Broom - Cleaning a hard wooden floor" by Vrymaa, CC0 1.0; #264123 "Pouring rice on a clay pot" by kessir, CC0 1.0. Edits: designed: one broom stroke from #802724 cut 7.75-8.85 s (HPF 200 Hz, LPF 11 kHz) + rice rattle from #264123 cut 16.6 s (HPF 300 Hz) shaped by the stroke envelope, -12 dB; trim, fades, peak -1 dBFS
sfx_dream_shimmer_short — synthesized for this series: Same engine, 1.6 s dense sparkle sting.
sfx_jm_basket — #288943 "suitcase-down-4.aif" (wicker case set down) by toefur, CC0 1.0. Edits: cut 0.00-0.85 s; HPF 60 Hz; trim, fades, peak -1 dBFS
sfx_mat_flap_1 — #450376 "wood shutter inner door with antique handle lock open close shut hit frame rattle and handle turn squeaks end various on offmic int perspective.flac" by kyles, CC0 1.0; #580555 "Bamboo mat rustle / breaking" by peqdavid5, CC0 1.0. Edits: designed: shutter clack from #450376 cut 25.45-26.20 s (HPF 260 Hz, LPF 9 kHz) + bamboo-mat crackle from #580555 cut 66.95-67.30 s (HPF 500 Hz, -9 dB) on the hit; trim, fades, peak -1 dBFS
sfx_mat_flap_2 — #450376 "wood shutter inner door with antique handle lock open close shut hit frame rattle and handle turn squeaks end various on offmic int perspective.flac" by kyles, CC0 1.0; #785117 "Wood - Rattle" by Vrymaa, CC0 1.0. Edits: designed: shutter clack from #450376 cut 11.95-12.65 s (HPF 260 Hz, LPF 9 kHz) + blind rattle from #785117 cut 7.72-8.10 s (HPF 500 Hz, -11 dB, +30 ms); trim, fades, peak -1 dBFS
sfx_paper_rustle_1 — #181774 "rustling paper.wav" by keweldog, CC0 1.0. Edits: cut 0.30-2.55 s; HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_paper_rustle_2 — #181774 "rustling paper.wav" by keweldog, CC0 1.0. Edits: cut 2.50-4.45 s; HPF 80 Hz; trim, fades, peak -1 dBFS
sfx_paper_rustle_3 — #449127 "Rustling Paper" by HarpyHarpHarp, CC0 1.0. Edits: cut 1.45-2.15 s; HPF 80 Hz,FFT denoise 10 dB (floor -60); trim, fades, peak -1 dBFS
sfx_paper_slide_1 — #464302 "PaperSlide.wav" by eyesonlegs, CC0 1.0. Edits: cut 0.00-1.64 s; HPF 60 Hz,FFT denoise 10 dB (floor -55); trim, fades, peak -1 dBFS
sfx_paper_slide_2 — #444431 "Sliding Envelope.wav" by MTJohnson, CC0 1.0. Edits: cut 0.20-1.10 s; HPF 80 Hz; trim, fades, peak -3 dBFS
sfx_paper_tear_1 — #272028 "Ripping Paper" by aldenroth2, CC0 1.0. Edits: cut 0.00-1.96 s; HPF 60 Hz,FFT denoise 8 dB (floor -60); trim, fades, peak -1 dBFS
sfx_paper_tear_2 — #342541 "Fast Paper Rip" by sgrowe, CC0 1.0. Edits: cut 0.00-0.89 s; HPF 60 Hz; trim, fades, peak -1 dBFS
sfx_paper_tear_3 — #170311 "Tearing paper" by ludde44, CC0 1.0. Edits: cut 0.20-1.52 s; HPF 60 Hz; trim, fades, peak -1 dBFS
sfx_pencil_scribble_1 — #257518 "Scribble_short.wav" by waldram, CC0 1.0. Edits: cut 0.00-1.27 s; HPF 150 Hz,FFT denoise 12 dB (floor -50); trim, fades, peak -1 dBFS
sfx_pencil_scribble_2 — #85703 "Pencil_scibble.aif" by tmkappelt, CC0 1.0. Edits: cut 0.00-3.20 s; HPF 150 Hz,FFT denoise 12 dB (floor -62); trim, fades, peak -1 dBFS
sfx_roller_thunk — #812363 "Knocking once on wood, single footstep" by CuboRodante, CC0 1.0. Edits: cut 0.35-0.66 s (one dry knock + small settle); HPF 60 Hz; trim, fades, peak -1 dBFS
sfx_rope_creak — #231438 "hamp rope creaks" by 6polnic, CC0 1.0. Edits: cut 6.64-7.38 s; HPF 90 Hz; trim, fades, peak -1 dBFS (true peak about +0.3 dBTP)
sfx_sail_fill — #465605 "SailDeploy.wav" by codefhd, CC0 1.0. Edits: cut 2.10-3.30 s (the middle whump); HPF 50 Hz; trim, 10 ms fade-in, 0.3 s fade-out, peak -1 dBFS
sfx_sandal_pat_1 — #388518 "SlippersOnWoodenFloor.wav" by singingmonk02, CC0 1.0. Edits: cut 0.48-0.75 s (one slipper step on a wooden floor); HPF 70 Hz, FFT denoise 12 dB; trim, fades, peak -1 dBFS
sfx_sandal_pat_2 — #388518 "SlippersOnWoodenFloor.wav" by singingmonk02, CC0 1.0. Edits: cut 0.86-1.12 s; HPF 70 Hz, FFT denoise 12 dB; trim, fades, peak -1 dBFS
sfx_sandal_pat_3 — #388518 "SlippersOnWoodenFloor.wav" by singingmonk02, CC0 1.0. Edits: cut 1.80-2.06 s; HPF 70 Hz, FFT denoise 12 dB; trim, fades, peak -1 dBFS
sfx_sandal_pat_4 — #388518 "SlippersOnWoodenFloor.wav" by singingmonk02, CC0 1.0. Edits: cut 2.90-3.16 s; HPF 70 Hz, FFT denoise 12 dB; trim, fades, peak -1 dBFS
sfx_stick_knock — #554916 "Hollow Wood Knocking" by Yellow434, CC0 1.0; #364704 "Hit Wood Hollow" by alegemaate, CC0 1.0. Edits: designed: single knock from #554916 cut 3.52-3.76 s (HPF 120 Hz) + low thud #364704 (LPF 2.5 kHz, -7 dB, onset-aligned); trim, fades, peak -1 dBFS
sfx_thread_pull_1 — #646586 "Sewing cloth.wav" by heifabaisi, CC0 1.0. Edits: cut 92.55-93.30 s; HPF 100 Hz,FFT denoise 10 dB (floor -60); trim, fades, peak -1 dBFS
sfx_tick — synthesized for this series: A short synthesized key click for typing in the Qaf app screen (made for this series). Non-instrumental.
sfx_tin_clink — #776504 "Couple of coins on wood top" by nicoproson, CC0 1.0. Edits: cut 1.28-2.05 s (a few coins set down on wood); HPF 150 Hz, LPF 10 kHz; trim, 0.12 s fade-out, peak -1 dBFS
sfx_tissue_slide_1 — #147281 "fh_Paper_Swipe_Surface2_Long_01.wav" by Frank1100, CC0 1.0. Edits: cut 0.10-1.42 s; HPF 120 Hz; trim, fades, peak -1 dBFS
sfx_tissue_slide_2 — #147286 "fh_Paper_Swipe_Surface2_Mid_01.wav" by Frank1100, CC0 1.0. Edits: cut 0.00-1.24 s; HPF 120 Hz,FFT denoise 8 dB (floor -55); trim, fades, peak -1 dBFS
sfx_water_bob — #480838 "R23-36-Water Against Wooden Boat.wav" by craigsmith, CC0 1.0; #364704 "Hit Wood Hollow" by alegemaate, CC0 1.0. Edits: designed: two water slaps against a wooden boat from #480838 cut 8.40-9.35 s (HPF 60 Hz) + dull hull knock #364704 (LPF 1.4 kHz, -9 dB, onset-aligned); trim, 0.25 s fade-out, peak -1 dBFS
sfx_water_lap_small — #438839 "G54-04-Pier Lap.wav" by craigsmith, CC0 1.0. Edits: cut 36.30-37.60 s (one lap against a wooden pier); HPF 50 Hz; 60 ms fade-in, 300 ms fade-out, peak -1 dBFS
sfx_whoosh_2 — #683101 "quick woosh" by florianreichelt, CC0 1.0. Edits: cut 0.05-2.05 s; no EQ; trim, fades, peak -1 dBFS
sfx_whoosh_3 — #369698 "Whoosh.wav" by crackles04, CC0 1.0. Edits: cut 2.40-6.20 s; no EQ; trim, fades, peak -1 dBFS
sfx_whoosh_4 — #60013 "Whoosh" by qubodup, CC0 1.0. Edits: cut 0.00-0.43 s; no EQ; trim, fades, peak -1 dBFS
sfx_whoosh_soft_synth — synthesized for this series: White noise through a time-varying log-Gaussian band-pass sweeping 300 Hz -> 2.2 kHz, swell envelope, slow L->R pan.
sfx_wood_box_thud — #719794 "Setting down small hard object" by JoMungus, CC0 1.0. Edits: cut 0.00-0.50 s (object set down on a wooden desk); HPF 50 Hz; trim, fades, peak -1 dBFS
sfx_wood_creak_short — #130364 "Slow Creaking Stereo.wav" by harveyism, CC0 1.0. Edits: cut 12.15-13.40 s; pitched/slowed to 0.8x (about -4 semitones); HPF 60 Hz; trim, fades, peak -1 dBFS